Offered here is a carnival PYREX CD 234. Front skirt embossed PYREX T.M. REG. U.S. PAT. OFF. The rear skirt is embossed MADE IN THE U.S.A. with the number 1 above the lettering and the number 63 after the lettering The insulator has two long flat base chips. $30.00 shipped anywhere in the lower 48. PayPal no fee.