CD 143 [020] embossed very boldly with the 3 letters G . N . W There is no period after the last letter. The damage is confined to the base chip seen under the G. The discoloration seen behind the G is actually a stain on the glass around the pinhole. It is not any amber swirls. Price $20.00 plus shipping. I will ship to Canada by the least expensive means. PayPal is OK too. First email as always!