it is already worth more in some circles...
It definitely is in my small circle.........
I do think that the SC#22 is a huge DC silver age key, but the SC#4 books seem to be more scarce than the SC#22's.
I have to admit...SC4 has been the laggard, but is picking up steam. Scarce in supply doesn't always quantify demand. Price point per grade recorded sales, SC4 is still the most valuable SA DC, followed by SC22 and BB28. Demand wise would be SC22 and close followed by BB28 and then SC4.
I would agree to this order of demand, and maybe its just me but it seems that BB#28 isn't real close to SC#22. Or am i wrong?