This 2 1/8ths by 1 1/8ths inch pin is hand initialed and I don't recognize the mark. It looks similar to a David Andersen example. The pin is working and the condition is excellent. It weighs 15.8 grams.
The item "VINTAGE SCANDINAVIAN STERLING ENAMEL MODERNIST PIN HAND INITIALED. 925SS" is in sale since Thursday, August 10, 2017. This item is in the category "Jewelry & Watches\Vintage & Antique Jewelry\Vintage Ethnic/Regional/Tribal\Scandinavian".The seller is "diamondspringsjewelry" and is located in Rio Vista, California. This item can be shipped worldwide.