Hi, thanks for your question. Here's some information about your gun. According to the serial number, it was manufactured in 1902. It is a grade-2 gun (amongst the lowest end of the grading system) and sold for around $80 when new. To put that into perspective, their top of the line Grade-8 sold for $500 in 1907, and grade-9 for $1,250 in 1927. The engravings on your gun were standard. The G you mention below the serial number on the water table is the grade. If it had a GH it would denote a hammerless model--so I'm a little confused as to how this gun has ejectors, which were supposedly only offered on the hammerless guns. If this was a hammerless gun with ejectors it should actually have a "GHE" denotation instead of simply a "G". Parker guns didn't exactly have "models" they were sorted more by grades.
As far as value goes, that's subjective. I just found a Parker GHE (grade 2, hammerless with ejectors) from 1918 with damascus barrels on auction for $3,500. It is in top condition and has some additional customizations. Your best bet to get a good valuation is to go to a local gun collector with knowledge of Parkers who can see it in person and appraise it. The other option is to go to this site http://parkerguns.org/forums/ and post a question about your gun with pictures. There are several knowledgeable Parker experts
on there who can give you a better idea of what it's worth, even though it's better to see someone in person, especially for what could be a high value item. Best of luck!
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