Cameron, the ID & Ser. book shows your gun as a straight grip, 28" with ejectors, single trigger, large forend (BTFE) and vent rib as options. It now sports a pistol grip stock so it is pretty likely that it has been restocked at some point in it's life. Nonetheless, it is a rare (unique) and valuable Parker as, according to the table on page 402 of Vol. 1 of The Parker Story, it is
very probably the only "known" 28-inch trap gun of any grade.
Lucky You
!! 
You can find out more about your wonderful Parker by ordering a PGCA Research Letter at a cost of only $60 for non-members or $40 for members.
You can click on the tab on our Home Page for a printable form requesting a letter. Mailing address is on the form.
Don't let that gun out of your sight.
Threaded Mode