History of the 1116 bracelet clasps

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The upper End Links are Service parts from Omega.
Okay, you mean those on the transparent back of my first photo?
 
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Okay, you mean those on the transparent back of my first photo?
Jap, exactly this one. I know them because i ordered the same from Omega and there are Service Parts 馃榾
 
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Good morning OF, I have a question about this bracelet; I have 2 bracelets with 2 different clasps and 2 different endlinks...
Maybe one of those are fake... (Or both!... I hope not...) .. In fact I look for info about the production dates of the #11 and #30 clasp, to see which one would be the best for my 145.012. And also, would like to know which endlinks fits with the right clasp... Because they are all marked 575 but look really very different... If you have opinions about that, don't hesitate!
Thanks a lot.
B.
From these photos it looks like the 30 is using the older Omega logo with the narrow feet. That's probably a clue in itself as to the age. 11 is used all through the 70's where as 30 isn't seen on bracelets after about 71, eg the 1171 trapzoid from about 1971 onwards is usually always on an 11.

I think the circle 30 is the earlier, with its pre-69 omega logo and simpler friction coming only from the two top edges of the clasp.
Edited:
 
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Okay, thanks @Dms5150, I use it now with a 145.022-69 from 1971, so I should have kept the 30!...馃槻馃槻馃槻
 
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Hi there, I might need you help. I currently have what seems to be a 1116 bracelet, but the clasp is a 1181. It came in addition of an Omega 145.022-69 that already had its 1116 bracelet. Here some picts for more details. Do you think this could be a frankeinstrap ? Thanks a lot for any clue 馃榾

 
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Hi there, I might need you help. I currently have what seems to be a 1116 bracelet, but the clasp is a 1181. It came in addition of an Omega 145.022-69 that already had its 1116 bracelet. Here some picts for more details. Do you think this could be a frankeinstrap ? Thanks a lot for any clue 馃榾
The clasp has been replaced. The original clasp probably broke and the watchmaker has the 1181 clasp handy and used it to make the bracelet usable.
 
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The clasp has been replaced. The original clasp probably broke and the watchmaker has the 1181 clasp handy and used it to make the bracelet usable.
Simple as that indeed