I know that someone out there must know what number, if any, this bracelet is. It came with a Speedmaster and had number 47 end pieces. I know that the bracelet was not original to the watch, which was a 145.012. I don't think the 47 end pieces were original to the bracelet either. The bracelet only says "Omega" and "stainless steel" thanks.
I believe these came on Speedmasters from the early 70's, sort of in between the 1039's and the 1171's. Yes they came with 20mm No. 47 end links. Very nice and solid bracelets.
They came as an option for several Omega models. Back then you ordered your watch head and then picked what bracelet / strap you wanted from the options the store had. Speedmaster freaks have claimed that bracelet even though I've seen it on several models including Seamaster dive watches.
I dug out the old bracelet bag and had 2 No 12's one dated 6-70 and one dated 5- 77 (47 ends), also a JB in triangle instead of No 12 dated 3-81 (47 ends), all with the old style clasp with an embossed Omega symbol.
looks like 1175. I wouldn't say speed freaks have claimed it. it was an option, but there are several bracelets that are more desirable.