Here are the two sides of the two chips. Long time ago. (I just made the scans now.)

I think the very dark chip (on the right side) was the one I placed on my window sill, about 7-1-2001, marked so in pencil on chip. I guess I sun tanned each side ALMOST equally.

The lighter chip (on the left) must have come from the flea market dealer. Both sides. I know what you are thinking -- odd that both sides would look the same, be tanned the same. But I guess that was the case. .... ... But if from the factory that way, what is it worth?

Robert