This one passed through the shop very quickly but I wanted to get a couple of pics. The pic of the movt was taken prior to case polishing so looks very grubby. The other two pics are after being polished. The watch was only in for a case cleaning and polishing and was off to be sold.
I've seen this before, but still looking for a match. Might just be a '23'? 14K solid gold case and the pics do not do this justice, it really pops.
For some reason the pic of the dial makes it look like a re-dial, but this was less noticeable in person.
The serial number begins with either a 'C' or could possibly be a partially struck or worn Zero.