WatchUSeek Watch Forums banner

1 - 2 of 2 Posts

·
Registered
Joined
·
143 Posts
Discussion Starter · #1 · (Edited)
Starting a thread for vintage documentation fun and trying to find parts. I bought a "2296.80" off eBay (chrono titanium gold tantalum) and it's an interesting set of history. No papers but it went to Omega for service so that gives me some hints:

15855724


The serial number is 5000****, so the "date" lookup table of 1986 is wrong. The earliest this watch was produced/claimed is 1992 but the earliest model says 1993 for the tantalum gold version so maybe 1154 in 1992 only went to the stainless versions or something...don't know.

There's some weirdness though when it comes to the reference number. I believe the early models were not 2296.80 but instead either TL3780504 or TB3780504. To me visually it seems like TL means rose gold tantalum titanium (pink gold at the time) and TB means yellow gold titanium.

TL3780504 :

15855721


TB3780504 . Based on this picture I don't believe the yellow gold version has tantalum in its construction. Lighting can affect the appearance but there is no color difference to me between where tantalum would be (bluish dark gray) vs. titanium (gray):

15855720


So I think my watch seller was confused about the reference number and instead I got a TL3780504. The service paperwork lists the movement as caliber 1154 when watches after 1995 were caliber 1164. There is functionally no difference between the movements, but from my research it's just the finishing on the movement is better on the 1164. I don't know when 2296.80 became the reference.


"Cal. 1154 Created in 1992, 25 jewels Cal. 1164 Created in 1995, 25 jewels"

=============================

What really started this all off was trying to find a replacement clasp where the "Seamaster Professional" stamping had been polished too much. Long story short: I'm pretty sure that there is an "early" version of the clasp and a "late" version of the clasp. Possibly a "mid" version. The one I have I'm guessing is original and has 3 differences to the 1504/826 clasps you can buy today. First it doesn't say "titanium" on it anywhere. With newer SMP clasps it will say either "Stainless Steel" or "Titanium" in fine print on the inside of the metal bits like this:

117ti1504826 Omega Seamaster Chronograph 1504-826 Titanium Clasp 2298.80
15855702


It also seems like 1504/826 can either be the Stainless steel version or the Titanium version...you need the full number "117TI1504826" or "117ST1504826" to differentiate. Here is a link to the exploded parts diagram for the titanium bracelet:

15855703


Fun fact, you can in theory buy just the clasp cover itself that gets scratched up under "116TI1504" and not have to buy the entire set.

So, my clasp does not say titanium and has the model number stamped on the clasp cover itself (you can see "04-" in this photo)."Bracelet Made in France" I'm not sure if it shows up in later models:

15855739
15855701


My watch also does not have the "hook" on the diver extension that my 2002 SMP has and a "1996" watch has. The model being stamped in the same place though leads me to believe this is a "mid" version of the clasp that has a hook but the stamping in the early position:

Mine:
15855735
VS.
15855732


The second difference is in the attachment for the clasp to the bracelet. Mine uses 2 tubes and a pin and it appears the "later" version uses a single tube and pin with the end link being slightly more solid. In the diagram this would be part number 118TI1504 that changed and maybe has the same part number in both versions:

Mine:
15855698
VS.
15855704


Also my bracelet does not have any other markings on it near where it attaches to the watch. For a watch listed for sale as being "1996" there is a marking of TL-826 presumably to indicate rose gold (TL) and titanium/tantalum (826):

Mine:
15855723
VS.
15855706
 

Attachments

·
Registered
Joined
·
143 Posts
Discussion Starter · #2 ·
Small update: because Omega commits to at least 30 years worth of parts availability, you can still order a replacement clasp for about $430 plus tax from them (titanium, stainless is much cheaper ~$150). Pretty hassle free and the boutiques have really stepped up their game over the last 5 years to not just be a sales store but also a one stop support store.
 
1 - 2 of 2 Posts
Top