I believe that most from the early '60s on will be signed, but there are many anomalies in JLC. Shape and size are consistent with the unsigned crowns I have seen, are proportional to the watch, so IMO they are OK. I followed this seller pretty closely for a while, though not lately, and have bought from him once before. If you cut through his florid style & puffery, the actual descriptions of watch and condition are accurate so far as I have noticed. Looks like a pretty nice example, though I am not personally a fan of gold-filled watches.
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