Depends upon what one considers to be "rare".

My opinion is; Lots of strikes that were formerly priced above commons are all going into the melt pile today because the premium prices asked have been eclipsed by the much higher melt values for silver content. A $10 strike that was valued at say $100 is still priced at $100 in spite of the runup in recent silver prices. I recently purchased a Cochenour catalog and many of the prices have not been increased to reflect the higher price of silver.