I just bought a Key West that presents itself in excellent cosmetic condition. It's not restored, just a great "low mileage" game. Once I got it home and started going over it, I noticed that the body is stamped with the serial number G5361, the head is stamped G5356, the playfield top arch is stamped 5245, and the playfield above the red ball lifter hood is stamped 566, so none of the numbers match.
Does anyone know what the "G" prefix indicates, if anything?
Do the mismatching numbers mean that the body, head, and playfield were at one time part of different games?
I thought maybe the "G" indicated a test or prototype game. I'd appreciate hearing if anyone else has games with letter prefixes and what they might signify.