A recent acquisition had a vintage 1171 bracelet attached. I'm aware that there have been several incarnations of the 1171, including the currently available new 1171/1. This one just carried the 1171 marking on the clasp, and has 175 endlinks. At any rate it was a bit too big for me, so I needed to remove a link. My experiences with other Omega bracelets had me prepared to hammer out the link pins and watch out for loose collars. When I looked at the links it appeared that I was seeing a split in the pin. Was it a press in split pin or a thread? I figured I had nothing to lose if I assumed it was a threaded pin, so I got out the screwdriver and had a go at it. Son of a gun - threaded pin! This made the whole bracelet sizing adventure a piece of cake. My newest Omegas now have bracelets with tiny threaded screws that retain loose fitting internal pins - fussy and easy to lose parts. Sometimes old is better!
Fortunately I now have 1 spare link. That should tide me over in the event my wrist miraculously grows! I did take the opportunity to order a spare threaded pin.