Thank you very much, I never would have guessed that. So it is definitely WWII but who used it is somewhat unknown although it appears it would be either Japaneseicon Troops or Chinese Troops under the control of Japan (Manchukuo).

I did a search to see what exactly a Type 19 was and the rifle has the same markings on it as the bayonet.

So would these have been used against the Chinese communists and the Soviets at the end of the war?

A little over 1000 produced? Seems low with the number of rifles guesstimated at 38,000.