: Case polish looks minimal, what you're looking for is sharp bevels
: on the lugs on the Carreras.

The serial number looks to be very visible, which is a good sign.

: I'm not sure the crown is original
: - large unsigned crowns were correct for earlier 2447s but I've
: never known them to be found on 3647s.

My 3647 has an unsigned crown, and before buying made some enquiries of someone with a lot more Carrera experience than I that they did come this way.

:Otherwise, the dial looks
: all right. I'd want to know what the serial number is before
: buying (lower = more likely the crown is OK)

Serial looks like 6610x or 8610x to me. Either side my 3647.

: but my biggest
: issue with this is that it's overpriced by at least 100%

My second thought after "That's nice!"

Mike