An Overview of Omega caliber 1045 Speedmasters:
Written by Chuck Maddox on 27 December 1999, certain rights reserved.
Last Revised: 22 November 2000, 21:05 GMT

-- c.1045 movement in a ST176.0014 (1974)

Foreward:

Back on 18 December 1999 Jay Levy posted the following request for information:


I have just acquired an Omega Speedmaster, but no one including the seller could tell me much about it. Here is the description:
  1. Omega Speedmaster Automatic
  2. Day & Date windows at 3:00
  3. 24 hour dial at 12:00
  4. Sweep second dial at 9:00
  5. Chrono second & minute hands rotate from center of dial, as do regular hour & minute hands.
  6. Dial at 6:00 is for chron hours (I guess)
  7. One other thing - the entire case can be pushed down out of the bracelet.
  8. The back has the Seamonster logo and the word "Seamaster".
I can send a scan if you e-mail me. I would like to know anything about this watch - model number, age, value,
 
Thanks in advance for your help.........

For me it was immediately evident that the watch he described was a c.1045 Speedmaster. I requested a scan via email, which Jay was kind enough to send. Since this branch of the Speedmaster family tree isn't widely knownor particularly well documented I felt that a complete write up was in order. I compilied the following information and this page is an expanded and updated version of that write-up...
 
As an aside, the response to this article has been both gratifing and overwhelming! I have had people contact me from many different nations from Japan to Spain and other locations elsewhere in the world. I have also tried to find suitable examples of specific models for people who have either became interested in a specific model because of this article or had been searching for information on these watches and found the article either through trying or by luck.

Table: Dimensions of c.1045 Speedmaster Automatics

Reference

Description

Height
Width w/Crown
Width w/o Crown
Thickness
Weight
176.0012

Mark II case version

45 mm
44 mm
42 mm
15 mm
134.05 g
176.0014

TV Dial/Link Bracelet

42.8 mm
42.2 mm
39.7 mm
15.8 mm
139.68 g
176.0015

Tourneau / Bar Bracelet

43.2 mm
42.0 mm
39.0 mm
15.1 mm
155.15 g
176.0016

Tourneau / Link Bracelet

44.1 mm
42.0 mm
39.0 mm
15.1 mm
126.67 g
376.0806

Mark V

44.8 mm
45.5 mm
44.1 mm
14.2 mm
126.40 g
376.0822

Moonwatch Case

Unknown
43 mm
40 mm
15.5mm
120 g

I do not own nor have ever seen in person the moonwatch cased variant of the c.1045 series. If you have a variant that I do not have measurments, please let me know what they are so I can update this table... Special thanks to Gene Henry for providing the dimensions of his ST 376.0822...


Jay was kind enough to email me a photo of the watch he bought (post it Jay! It's a beautiful watch! in even better shape than my example!) and it appears to be the same as this shown immediately below (Fig. 1):
 
Speedmaster ST176.0012
Fig. 1: Ref. No. 176.0012 (1974)

Omega uses it's own in-house numbering system to refer to caliber numbers of it's time pieces. This watch uses the Omega cal. 1045 movement which is the same as the Lemania 5100 movement. The 5100 has been and is currently in production and used by a number of manufacters in their Chronographs. Omega fine tuned the Lemania movement it procured from Lemania and stamps it's name and logo on the rotor (see below). The c.1045 uses a 17 Jewel automatic movement, and features four hands operating from the central pinion which requires a significant distance between the dial and the inside surface of the crystal, making for a thick watch.This movement is not for the petite, or those looking for a watch that will fit easily under a dress shirt cuff. For Dimensions of the watches I own please see the table I have at the top of this article...

The Lemania movement is also known for using a significant number of plastic parts which are significantly lighter and seem to perform as well or maybe even better than metal parts would despite what some watch purists believe or would have you believe. 

Omega made a number of models with this movement starting in 1974 and ending in 1987 (as of this date anyway), with the vast majority being made during the 1974-1975 timeframe. As this watch was (Fig. 1). The Time Capsule book lists this particular model as being manufactered in both 1974 and 1975, however one of the "1975" references also call it a Mark IV which is most definately a different watch using a different movement and most likely is in error.
     

Of the four c.1045's that I have all of them have had Spanish language stampings on the bracelets and have had Spanish (3) or Portugese (1) language day rings on/in them. The rounded square dial c.1045 (Fig. 2) is the one in my collection that has the Portugese day ring. From what I have been able to puzzle out Omega sold a lot of these models in Latin American market as this is where the bracelets seem to be coming from... I've talked to dealers who have said that Omega sold a lot of these models to european ex-patriot's living in Latin America. Among the big selling points are that the 24-Hour dial would allow them to figure out what time it was at "home" by adding the time difference with their home country, and that Omega is a widely known and respected watchmaker around the world.

Note: The English Day Ring is obtainable and can be swaped into the watch when it is in for routine maintance. I have done this on three of my c.1045's and will be doing it shortly to the fourth. The Omega Part number is: 1045-1516 A (9/97).

With the emergence of the internet and the ease of seeing a demand and interest in watches in other parts of the world, there seems to be a migration of these models from Latin America to the north where they are sold by dealers, stores, and by sellers on the internet. I have not been able to determine if these models were ever offered by Omega in the US or in Europe, indeed it is possible that they, like the later West German market only models, were not originally offered in the U.S. or Europe.

The 176.0012 model as pictured above in Fig. 1 is in my opinion the most common model. They regularly show up on that famous internet auction site and on other places on line. Bear in mind that they are not common watches when compared with Mark II or Moonwatch Speedmasters, just seemingly more common than the other models sharing the c.1045 movement. This model features a modular construction that allows the movement and crystal to be removed from the case as one unit. This feature is also seen on the Omega Speedmaster Mark IV and the Omega Speedmaster 125.

The next most common (Ref. 176.0014) pictured in Fig. 2 is the rounded corner square (or TV Shape) dialed c.1045. These are fairly common as well. Next in most common is the Tourneau shaped 176.0015/176.0016 (Fig. 3) which is somewhat less common than the other two models, but does show up from time to time. An interesting point is that I've seen a number of this model offered up on that most popular auction site from sellers in Austrailia. Why this particular model would be prevelent in that area of the world is a mystery to me. Another point that bears mentioning is that there are two discinct variations of this style... One is fitted with an integrated Bar Braclet, the other has a more conventional case that will accept spring bar's and a 22mm bracelet or strap. The cases are different but look very similar. I have added a special section below to further discuss the differences between these two variants.

The final two models are very uncommon. Neither the "West German market" Mark V Speedmaster (Ref. 376.0806) pictured in Fig. 4, or the Moonwatch cased Ref. 376.0822 pictured in Fig. 5, are commonly seen. I've only seen a couple of Mark V's appear on the market (usually on eBay.de), and I've only seen two of the Moonwatch cased c.1045's. I have written a companion article on the Speedmaster Mark Series which also talks about the Mark V. The Moonwatch cased c.1045 I saw was on that auction site from a seller in Germany (which I regretably passed on as I had just been bit by the collecting bug) the other is owned by Gerry L. who's 376.0822's picture I adapted from one of Gerry's posts (thanks Gerry!).

Speedmaster ST176.0014
Fig. 2: Ref. 176.0014 (1974)
 
Speedmaster ST176.0016
Fig. 3: Ref. 176.0016 (1974)
 
Speedmaster ST376.0806
Fig. 4: Ref. 376.0806 (1984)
 
Speedmaster ST376.0822
Fig. 5: Ref. 376.0822 (1987)
 
 
Rough Price Ranges:
 
For me to authoratively state values of any of these watches would be quite arrogant of me, for I am by no means an expert. The best I can do is to state general ranges that I have seen these models go for. I've seen the Mark II cased Ref. 176.0012 (Fig. 1) version typically go in the $500-800 range, the rounded-corner square dial Ref. 176.0014 (Fig. 2) version typically go in the $700-850 range, the Tourneau cased 176.0016 (Fig. 3) version typically going in the $750-950 range, the other models I haven't seen enough offered for sale to even guess at a range. However, you should be aware that these ranges vary greatly depending on the condition of the watch, quality of the bracelet, and the demand for the particular watch. According to the dealer that I bought my 176.0014 from he had offered it two or three times on TZ's Sales Corner before posting it on that auction site where I snapped it up as it was the cleanest one I have seen. I had missed it's posting on the Sales Corner. It is also important to note that people have preference for or against certain models or styles of watches. Some people simply do not like the looks of style X while other's will think it's the bee's knees. Personally, I feel that the tourneau cased c.1045 (Fig. 3) is about the most handsome chronograph that Omega has ever made. Your mileage will vary.

Tourneau Cased c.1045 Variants:
 
One of the nice things about posting an article such as this is that people will ask you questions. Some of which will exceed your existing knowledge of the subject and requires you to do further research in order to answer. Sumihisa Furufuji is a gentleman from Japan who enlisted my assistance in locating a Tourneau cased c.1045 for purchase. I was fortunate that I was able to locate one for Sumi. But in while in the process, Sumihisa asked me the following:
 
" I have a question about Ref.176.0016 case. I think there are two types.
Please check enclosed picture. "
Omega Speedmaster ST176.0015 - ST176.0016 Comparision
"Left side type has narrow distance from corner."
"Right side type has wide distance from corner."
"Bar"-Style bracelet Tourneau c.1045
"Link"-Bracelet Tourneau c.1045
Photo's and visual aids courtesy of Sumihisa Furufuji
       
Yes, there are two different type of cases... I have an example of each...
 
One is slightly shorter in length and is the one that has the "Bar"-Style bracelet. Which is the one's pictured on the left in Sumi's (fantastic) graphic. The other one (the longer length one) has a longer case length to allow it to accept a 22mm strap or a bracelet. It needs the extra length to allow clearance for the bracelet/strap and spring bar. Because the Bar-Style Bracelet is of an integrated design it can and does use a shorter case.
 
Here are the measurements that I have taken from my example of each of these watches:
 
Table: Dimensions of c.1045 Speedmaster Automatic Tourneau-Case

Reference

Description

Height
Width w/Crown
Width w/o Crown
Thickness
Weight
176.0015

Tourneau / Bar Bracelet

43.2 mm
42.0 mm
39.0 mm
15.1 mm
155.15 g
176.0016

Tourneau / Link Bracelet

44.1 mm
42.0 mm
39.0 mm
15.1 mm
126.67 g
   
As you can see the dimensions are exceedingly similar. Most of the differences are in the weight and the height. Most of the weight difference can be attributed to the HEAVY Bar-Bracelet, the height difference is due the the necessary provisions to accomodate the spring-bars that are necessary for attaching a strap or bracelet to the watch's case... I also should note that the ST176.0014 TV Dial (or rounded corner square-dial) c.1045 also comes in both a Link and bar bracelet variants. As I've never handled the bar bracelet version I do not know the weight or case reference number. If you own one of these and can provide me information please contact me...
 
-- Special thanks to Sumihisa Furufuji for his photos and valuable assistance with this section!
Summary:
 
The Speedmaster Automatic Chronographs are among the most sophisticated chronographs Omega has ever produced. About the only more complex chrono's Omega makes are moonphase and triple-date variants of the Speedmaster.

I wish I had more information that wasn't conjecture and wished that I was able to piece together more, but what can you do? If anyone has more information to add please post it here or email me at the link above

-- Chuck



Statement of rights retained and permissions granted...

Permission is granted for Damon or RJ to include within the FAQ's they are writing as long as I'm given credit for this work (and Gerry L. is given credit for the picture of his Ref. 376.0822 Speedmaster). Permission for personal, educational or non-commercial use is granted. The author retains all other rights not specifically mentioned here... For all other use please contact the author.

Disclaimer: Opinions are my own and knowing me should be taken with a grain or two of salt...

Author's ST176.0015 Speedmaster Automatic Day-Date c.1045

-- The author's ST176.0015 Speedmaster Automatic Day-Date c.1045