. . . have acquired several vintage Omegas with issues knowing they had to be corrected.
This '56 Seamaster ref 2846 . . .

. . . acquired at low cost a few years ago had an incorrect crown and seconds hand. I knew that going in, but no idea how difficult it would prove to remediate. My assumption was that it would be fairly easy.
As it turned out, replacement seconds hands are impossible to source. I had to acquire a dial and movement from another '56 with a gilt seconds hand. My watchmaker had to remove the gold plating with abrasives.
And when I called the largest Omega parts supplier in America to order a clover crown, the salesman that took my call said, "We have one left."
Since then, I've bought three different Omega crowns from the same supplier. They've all disappeared from their website.
Bottom line: it pays when collecting vintage to get perfect specimens. Correcting issues isn't only expensive, it's getting to be next to impossible.
Art