The first is a CD 187 with the patent date. The date is very weak. It is a green aqua and just has a little bit of the normal roughness around the top of the pinhole. I am asking $25.00 plus shipping for this one. The second is a CD 188 with patent date in a dark aqua. It has some of the normal roughness around the top of the pinhole, and a pinpoint tick or two. I am asking $18.00 plus shipping for this one. Or take the pair for $40.00 plus shipping.