The Cody records say that the gun was shipped in 1939 with 26 inch barrels, WS1 and WS2, with pistol grip stock with 13 1/2 inch length of pull. So the gun conforms to original specifications. Also, I failed to say earlier that it is a Skeet gun.
My expert friend agrees with me that the stock has not been hollowed and is the original. He says that the typical 20 gauge 21 of that period would weigh at least 1/2 to 3/4 of a pound more. He doesn't know what makes the gun so light. I was hunting with him on Saturday and the 20 gauge Grand American with the 26 inch set of barrels that he was hunting with weighed 6 3/4 pounds. When he thinks of a light 20 gauge 21 is is thinking of a gun that weighs about 6 pounds and four ounces.
I checked my records and the other 20 gauge 21 that I owned weighed 6 pounds and 10 ounces.
Any more information or knowledge of light weighted 21's is appreciated.
Thanks,
Riprap