Parker stamp help

[James Palmer]

Just hoping to get some info on stamp marks....

This is a 12 ga 1 1/2 frame serial number 177xxx

Much appreciated.

J

[Bill Zachow]

PS is Parker steel. JG is James Gerrie, Parker barrel contractor, HT over A is unknown but maybe something to do with High Tensile steel? 3/6 (or 3/8) is the unstuck barrel weight in pounds and ounces. Note: unstruck means before filing and fitting, without the forend attached. I cannot make out the other stampins to tell you what they are.