Kellogg 1919 Candlestick phone my Grandmother won from Finders Inc.

My Grandmother won this phone from Finders Inc. in a Cleveland, Ohio newspaper not sure what year she won it. A Hollywood motion picture studio sold it to Finders so they could give it away as a prize. It is in Mint condition. My Grandmother wanted to give it to my Grandfather for a surprise birthday present, the article mentions it could have been used in movies back in the 1920's-1930's by Clark Gable and Edward Robinson. I now inherited this phone which is pretty precious !