There is no reason to not find a 1990-D in the wild. Keep looking!

For what it is worth, I built my
Memorial cent set from circulation, too (except for the proofs). The 1991-D was my nemesis for years. Yes, I said
years. I did not fill that hole until
15 March 1998. Yes, that is
seven years.
I hope you do not wait that long!
