Perthshire Paperweight possibly one of a kind 2-9/16 diameter I believe that this Perthshire paperweight is possibly one of a kind. I can't find reference to this design in the Mahoney/McClanahan guide books. The paperweight has a "P" cane on the bottom. It's in very good condition with no marks except very slight shelf wear on the bottom.The item "Perthshire Paperweight possibly one of a kind" is in sale since Monday, March 13, 2017. This item is in the category "Pottery & Glass\Glass\Art Glass\Paperweights\Other Art Glass Paperweights". The seller is "wobbledribble" and is located in Grayslake, Illinois. This item can be shipped to United States.