"Attack rapidly, ruthlessly, viciously, without rest, however tired and hungry you may be, the enemy will be more tired, more hungry. Keep punching." General George S. Patton
However, having used a small quarter-sized magnifier, I figured out that it has a Birminham Provisional proof mark(what I originally thought looked hatchet shaped), a Birmingham Viewmark, (the mark I thought looked like a swastika), and another set of crossed swords/scepters with firm indentations to the bottom and left and barely inscribed marks on the right and possibly top. I can't plainly decipher the the good marks but assume it is the Birmingham Proof mark.
Can anyone put a probable date range on it with the 4621 serial number?
I don't think it's possible since there is no record of serial numbers, which seem to be arbitrary. It appears to be a low-end shotgun with back locks.
Not too many problems you can't fix
With a 1911 and a 30-06