I'm putting together a business strike year set for my son's year of birth (2006) to give him as a gift. ALL of the coins in the set must be NGC certified (I like PCGS and others, but am keeping the set uniform). Thus far I've amassed the cents, nickels, dimes, half-dollars, and dollars. I have the 2006-D Colorado quarter, but not the P. I have both South Dakotas. I still need the remaining quarters. Again, I'm only looking for the year 2006 and they must be NGC certified. If you have one or more you'd be willing to part with, please contact me.