CD 100.5 {020} variant with a 4 on the rear. This one is mint, there is a small straw mark on the inside of the insulator behind the 4. Embossed PYREX REG.U.S.PAT.OFF. on the front and MADE IN U.S.A below the number 4 on the rear. $125.00 includes US shipping. PayPal, check, or money order.