[TARNATION !!!]

You will sell/keep some of your Dad's guns. The criteria you set was keep the newer ones for use and sell the older/collector guns. IF you need the money that is understandable. IF you are a hunter, consider this. Many of the older guns are now valuable collector pieces BECAUSE they proved themselves admirably in the field decade after decade. IF they are sound guns, they will continue to provide a field experience you just don't get with some new plastic camo gun. I would experience your Dad's guns in the field as my first step in deciding who stays and who goes. My oldest gun is from 1878 and it still brings game to the table. As for selling the Parker, if that's what has to be, join this forum. Best $$ you will spend. You definitely won't get ripped off here because the folks know these guns, appreciate these guns and will pay fair price for these guns. I would sell my own guns before I would ever sell my Dad's guns but I'm too sentimental that way I guess. Good luck to you.
Jack