Hand stamped carbine

[USGI]

I just picked up a 12-44 Inland hand stamped carbine. Serial # 6688410 All original. Has anyone figured out how many Inland stamped like that?

I'm curious about the stock. Does it have a selector cut or the long barrel channel? I have a "hand stamped" Inland from early '45, s/n in the 6.94M range with a flip safety, but figure it originally had the "push" type. - Bob