1942 Banner police

[gunbugs]

Saw this was for sale locally, so I went to take a look. Negotiated a price and bought it. Looks to be pretty nice. The mag matches number wise, but I don't think the letter is correct. What are the chances of that? 1 in a thousand, I guess. Crisp bore, all the other numbers match on the gun. I would think it's a relatively scarce variant, as I have't seen many for sale, and they are fairly expensive when I do see them.