Yes the buttonholes are Machined not inset. Otherwise I probably would have hit the BIN already. The zipper is not a 1930's talon. Looks like it's not replaced but not 100% sure. I don't think this is GI. Probably a private purchase made in the early style. There are no collar snaps. Knits are probably replaced.
IMO - Not SAT or Goldsmith. Possibly a doctored Werber? I'm leaning toward private purchase.
No this grouping is not for me.
Go for it Ken it could be the lost Werber 6225!