All of the examples I have owned over the years had only the last 2-digits stamped on the bolt shroud.
Certainly by the rollover to S/42 1936 (r block) the consistent application of 4-digits was standard.
However, throughout the run you see some blocks with the full 4-digits so it was not uniform
I would expect an early gun like 5600b to show the early numbering pattern.
Certainly by the rollover to S/42 1936 (r block) the consistent application of 4-digits was standard.
However, throughout the run you see some blocks with the full 4-digits so it was not uniform
I would expect an early gun like 5600b to show the early numbering pattern.