John C.
Superb workmanship, thanks for posting, you say that the serial number is missing due to a bed re-grind, If you know someone high up in your local police department & tell them how you have restored a nice old vintage machine, I wonder if they could look at the portion of the bed with a portable device they use for checking auto mobile engine blocks where the serial number is ground off, Over here the police have this portable machine which can see the trace of the stamp under the grinding surface. Do not know if over your way they will help the community Might be worth asking? As far as i know this machine is a non destructive check ing divice.