Numbers on water table ?

[Bill Faulk]

Sending a picture this time.
What do these numbers indicate..DF1279 ?
Thanks,
Bill

[Hammer Gun]

Bill, I have not seen this before, not an order number I do not think maybe murphy could chime in. What do you think?

[Bill Murphy]

Not a Parker Brothers marking as far as I know, but very well done.

[Brush Buster]

I once had an LC Smith in 16 Ga. which was a USAF stamped gun and I don't recall exactly how it was stamped ,but I do remember something such as USAF XX and then a short series of numbers similar to this . Could this be something similar ????????