Black_Talon, I will attempt to get pictures, but there is no "minus 2". This serial number (sn 1369912) is clear and precise. It sits on the right side of the receiver in the lower left corner, under the the engraving that is of a long haired hunting dog and two flushing pheasant.
As stated before, the barrel is non-vented, but it does have an orange front bead. Could this be an after market item or would this been available in '47 ?
There are also two inter locking screws, the round bottom of a screw and the detent, from the pin, from the positive shell stop, all visible on the right side of the receiver. The left side has 3 screws, two of which are inter locking. That scene is of three inflight waterfowl.
The bottom of the grip cap is black with a white spacer.
The roto-forged anvil gun mark can be found on several parts including the receiver and barrel (2 places).
thanks again,
likemhot