Unlike the more common "McLaughlin-20's", Here are two "tall style" 7-Up Green CD 164's, front embossed: McLaughlin, back embossed: No - 20, (letter "o" is underscored) and with RDP. Both of these come from the same mould yet purchased about 10 years apart. The one on the right is a tad brighter and purchased recently from eBay for less than $12.00. I consider these to be rare (rather than scarce) but I could be wrong.