[Double Lab]

OK Frank, here's what I have if you can figure it out. The lug is stamped 292 right ,300 left and is X'ed out if you can make it out. It's a 16 KED.

The bores are .673 r, .671 left with the corresponding constrictions of .006 r, .016 left. That certainly doesn't jive with the stampings. The chokes don't look like they have been touched but then again I'm not sure of the significance of the X'ed stampings.

Also, anyone have any idea what the 4 digits, 4487, stamped on the receiver flats and the fore end iron mean?

It's a pretty nice gun as it has the POW grip with 28" barrels.