I'm pretty sure I've posted pics of these before, apologies in advance for my redundancy.
Here's an early first year Wingmaster in 16, 5 digit serial
And a 1936 M31 in 16, also with the 30" barrel as is the 870 above.
Very nice.
I bought a 1946 model 31 last week, 16ga. 26" modified. Been reblued, but very well done.
Haven't fired it yet, but it feels like a 20 ga. in my hands.
I also have a 1954 870adl in 16 ga.
Just love those vintage pump guns.