The first big set I found in 2005 was about 300" set. I was pretty excited. I showed my wife, and remarked," I wonder what these are worth?" She looked on e-bay, there were two sets much bigger than mine, they were asking $200- $250 for bid. She said,"Sell!Sell!"... "are you kidding?!!" was my reply. Your set is unique, I'd consider a skull plate mount for them.. you might later you ever parted with them, if you did sell. I know if I found a set like yours, you'd never see me part with them!!Again, awesome find!!