Let me introduce number "8" to the collection. The yellow one on the right. The collection of these great pens from 1967 is growing but we have a ways to go. I seem to have all the colors but if you go back to my very first post on 15 May 2009 you will see that I am still missing five designs. My original post which is a picture of the Papermate Ops N Pops Ad from 1967 there are 12 pens. I am missing 4 from the top row and 1 from the bottom row. They are getting very hard to find. Who out there is collecting all these great pens? We will continue the search and don't forget to add them all to your collection.