
On the top of the barrel, it is stamped:
MODEL 10-A
Still on the top of the barrel but to the right of that, and in smaller type, is stamped:
REMINGTON ARMS-UNION METALLIC CARTIDGE CO.
REMINGTON WORKS, ILIC <which I know is supposed to be "ILION, NY">
PATENTED FEBRUAR
(Of course, there is more on that line but it is worn away...)
On the left side of the barrel, it is stamped:
MOD A
. EYY3
. <mark> KC3
My first reading was that this meant it was made in May of 1934 ("K" & "C") and repaired by Remington in October of 1952 ("E" & "YY") but the Model 10 stopped production in 1929.

On the right side of the barrel but inverted is stamped:
275065
. U
On the underside of the receiver is stamped:
. U
154***
(Asteriks are mine.)
On the tail of the trigger-strap is stamped the round "Remington UMC" trademark.
The slide-lock on the left side is stamped:
TRADE Remington MARK
I believe it is a 27-inch barrel and I think the stock and forearm are walnut. The forearm is checked (rather than ribbed as in most pictures I have seen.) I'm not sure if it was once blued and has totally worn or if it was stripped or if it is some ancient stainless or what (but it now has an almost nickel-like patina...)
I'm wondering when it was made, what length shell it would have been originally chambered for (I'll take it to a 'smith before shooting it) and anything else people can tell me. One curiosity about this particular piece is that my father (former special forces and homicide detective) apparently look for several years to find this exact model (supposedly due to a peculiar fire-on-pump action when the trigger is held.) Can anyone throw me a bone??? Any info would be greatly appreciated!
Thanks!
Brian