Archie - If his dealer is paying $1.50 back of spot for Odd weight silver than a .60 center would be worth $12.21 and a .50 center would only bring $9.92.
So the older strikes are worth more than they are selling for the later ones have a bit to go.
Walt
P.S. A few people have given me some leads on refiners and I am waiting to hear back from a couple but one has said they would pay 92% of spot the day they received the material. There are insured mail costs to figure in.