Question about Type 99

[Milsurp Collector]

I now have a T-99 Toyo Kogyo that a friend's father brought back from the war. From what I can find out, it's a series 32 and the bolt does not match the rifles s/n. I have read that Toyo Kogyo arsenal used assembly numbers on the bolts but have seen other post here of a series 32 with all matching numbers. Which is correct? Does anyone know mfg. date s/n 973XX?

Matching by assembly number was discontinued during the early part of 30th series production. A 32nd series should be matched by serial number.

973xx is late in 32nd series production, so that would have been made in the last months of 1943.