Not often seen CD 100.5 [020], clear, smooth base. Embossed PYREX REG.U.S.PAT.OFF. on the front and 1 MADE IN U.S.A. on the rear. Condition is pure mint, looks as new as the day it was made. If your looking for an upgrade, this is it. Priced at $100.00 and that includes 2 day USPS priority shipping. Check, m.o., or PayPal. Satisfaction is guaranteed, thanks. Thanks Bill