Diamond Arms Company: Trade name used by the Shapleigh Hardware Company of St. Louis, Missouri on imported shotguns they retailed. WWI pretty much ended these imports and later guns may have been made by any of several US companies. A single shot is possibly an Iver Johnson Champion, a double barrel likely to be by Crescent or Stevens. There is little collector interest in these old utility guns and shooters would rather have newer firearms, so they are not highly valued. Singles sell for $50-$75, doubles for $125-$150.
Not sure if this is your gun, but Leader Gun Company was a trade name used on shotguns retailed by the Charles Williams Stores, Inc. of New York. Most likely manufacturer would be Crescent Arms, Norwich, CT. "Nitro" would imply proofed for smokeless powder.
The shotguns were manufactured by Ithaca from 1921 through 1947. Yours was manufactured in 1928.
The 12 gauge shotgun under the tradename American Nitro was made by the Iver Johnson Arms and Cycle Works company. They produced firearms under various trade names, including American Nitro, in the early 1900s.
Yes, 20 gauge is the second most common gauge for shotguns in the last few decades.
Gauge
Palmetto was a trade name used by Edward K Tryon of Philadelphia on lower grade revolvers and shotguns sold thru hardware stores, c.1880 - 1914.
The 12 gauge King Nitro number 3411 is likely a vintage shotgun manufactured by King Nitro. It may have a 2 3/4" chamber and be of good quality, but specific details about its features and history would require further research or inspection by a gun expert.
the year this gun was made was 1913. the ds grade is worth $250.00 poor to $1250.00 exe
Manufactured between 1886 and 1916. Retail value $50-$75 unless in like-new condition.
I can say that Browning started having shotguns made in 16 gauge in the year 1909.Winchester started having the model 12 shotguns made in 16 gauge in the year 1914.so I would surmise that the time frame of 1909-1915 would be the correct time frame for the introduction of the 16 gauge shotguns.
Ithaca made 10 gauge shotguns.
12 has a bigger bore.