Did I buy the story??

[c3006]

I was busy working a gunshow today when the son of a long gone friend came by my table and let me take a look at a double date that his uncle brought back and had left to him at his passing. He said it was all matching which it appeared to be so I gave him his asking price. When I got it home I got a better look ta the mag What do yall think. Anyone know right off hand what the unit markings are. Thanks c