It is signed with a partial mark due to the curve of the silver. The part that I can see is 925H, the city mark and 925 Sterling Finland.
The necklace is in excellent pre worn condition. The item "Vtg Erik Granit of Finland Modernist Sterling Silver Pendant Necklace 4 3/4" is in sale since Tuesday, June 06, 2017. This item is in the category "Jewelry & Watches\Vintage & Antique Jewelry\Vintage Ethnic/Regional/Tribal\Scandinavian". The seller is "vintagejewells4sale" and is located in Olympia, Washington.This item can be shipped to United States, all countries in Europe, Canada, Japan, Australia.