Greg, sorry, but I can't give you any definitive value; just not enough comparables. I can say H&H is Brand Value one (BV1). I'm inclined to call Current Condition level at three (CC3 = significant use). Original Quality grade I'd place at "Best Work" to "A". Later hammerguns tend to grade like boxlocks. But I think this gun falls outside the "tend".

BV1-OQ3-CC3 = $10,936
BV1-OQ4-CC3 = $8,323
BV1-OQ5-CC3 = $6,296

Somewhere within that range. Hope that helps a little. I'd love to see comparables with known sale prices.

DDA