IIRC the employees used numbers, letters or symbols.
The different procedures (magnaflux, proof firing, etc) were marked at a specific place by the employee that performed that procedure. E.G. the REP in an oval stands for Remington English Proof and is on the right side of the barrel. I think magnafluxing is stamped on the right too.
Thanks. When I found the Remington Society info it only showed a number for an example, so I incorrectly assumed it had to be a number for the employee.
