Hi OF,
Recently picked this up in a job lot of parts but struggling to find other examples of 803 end links, the remainder of bracelet is 78390 A.
I can see 803 b solid links but not 803. Anyone in the know that could educate me at all?? Thanks in advance gents.

 

It's genuine that's for sure. Lots of those bracelets fell apart at the end link-to-bracelet connection and that might be the remainder of the bracelet that was intact.

 

It’s the lack of “b” that’s throwing me. Also measures 20mm.

 

That's a Rolex 78390A bracelet for a Daytona 16520 20mm.