So u thought u paid for a 5513 but found out u actually bought a nice gilt chapter ring pcg 5512? Why it never happened to me? [emoji79]
Anyway, the insert is service for sure. The correct vintage insert for ur watch could b skinny 4, kissing 40, or long 5.
I can't c the discoloration in ur pic so I wouldn't bother too much. To my untrained eyes, it might b a relume. That's why I asked if it still glows which it should still do for a short period of time. Congrats on such a nice catch. If u r selling, dibs.
I blame it on the autoconnect.