Bought these on eBay, they were new/old stock 633 end pieces. They do not fit my modern watches. Note this photo on my modern-cased Speedmaster. (Sorry, mods, too dark, more pics will be added when it's daytime again.) I can only assume that they fit older Omegas better than the modern ones. Don't fit my Speedmaster, don't fit my reference 166.0324 Seamaster 300 (WatchCo). I paid $70, and so will you, which includes USPS Priorty Mail small box in the US. Tom
Hi. Easy to take your word for it. That said...Would be nice to see a pic of the other side, with the numbers.