A couple of 99s

[Aragorn243]

The Type 38 may still be matching. They used a second number called an assembly number on many of the 38's, including those made at Kokura. If the three digit number on the bolt matches the 3 digit numbers on the other various parts, it is probably matching. The easiest way to tell a Type 38 from a Type 99 is the number of holes in the receiver, 2 vs 1. Also the characters beneath the holes say "Type 99", "Type 38" in Japanese.