Vintage Omega crowns

Start with the old materials houses OFrie. Paylac(watchmaterial.com), W McCaw, Esslinger etc. Even though the selection is picked over, they did accumulate a lot of stuff over the decades. I have taken to keeping these tabs open in a separate browser window.

I have been spending a bit of time in this rabbit hole. Especially now that I found a 2577 case with no stem or crown. But I am assembling a rat-wach, so my criteria is not so pedantic. It is really easy to get lost in the lacunae of all this. Those gaps of what is and is not can be quite large. Then there is the choice of case tubes and washers to fit the crown. All this must work together.

eBay is often the place of last resort. A lot of the stuff sold there is scrap left over from other repairs. Only suitable for art projects.

If you are looking for period-correct, yes. I believe there are authentic service crowns as well.