SN break point from Meriden to Ilion-

[Old and Reliable]

A friend has a family 12 gauge Trojan, believe was purchased in the 1930's. SN is 213917 and the rib has the Parker Trojan Steel marking, barrels are 28 and have the J.G. stamp in a circle- grade is marked OV- 4-1 weight stamp and in small case HT over the letter A- No Parker proof in an oval on each flat. This Trojan does not have the small top rib extension, it has the flat breech face as found on a M21 Winchester. My Brownell's boremaster shows right tube nominal BD at .730 with a 0.015" choke, left tube at .731 BD with a 0.025" choke. Gun has no colors left on receiver, stock shows years of wear, 80% barrel blueing, locks up tight and on face, safety and trigger mechanics are perfect--

On the graded Parkers, after the Remington purchase, they engraver PARKER on the bottom of the receiver (just back of the hinge pin area I believe) but this guns is not marked in that manner. Any insights would be appreciated, and passed on to my friend--