Need help with 6251H (I think?) bracelet

[Claven2]

I sent a 1/1966 DJ 1601 to RSC for service with a well broken-in folded link jubilee that I think is a 6251H. Rolex refinished the bracelet without mention and sent the watch back. No sweat.

I was getting ready to send that bracelet to Rolliworks for an overhaul, but I noticed the clasp has what I think is an oyster bracelet reference number: 78360 and it has no manufacture date code.

The bracelet has the right 55 end links (one of which needs some attention), and the bracelet itself looks to be a correct folded jubilee (and if it was a fake, Rolex would not have overhauled it). It had 22 links until I had 2 removed last week for a better fit.

I'm having a hard time determining what I'm seeing. I *think* this is an undated 1970's or 1980's service clasp with the wrong reference number - maybe fitted by an independent watchmaker at some point (?).

If I want a more appropriate clasp, what is a decent match to my 1966 DJ?

When I look at used clasps from the late 60's, even within the 6251 range these is a big variety of both marked and unmarked dates, reference numbers, different pressing marks in the fold outs, and differet styles of outer clasp.

Help?