I decided to look at some of the older guns in my collection and I found my great great grandfathers Hollenbeck. I believe it is a grade D with a serial number 138. It appears to a be a custom job due to his initials being engraved on the trigger guard. The barrels are not pitted at all. I would place the condition of the gun in good to very good. any guess at what this is worth? and the possibility of it firing target loads? Thanks, Jake