Circa 1940s US 92.5% Silver TWA Member Token

Circa early 1940s United States sterling silver TWA Stratoliner member token (Balfour). Obverse relief of Stratoliner flying above clouds with letting "TWA Stratoliner Club Member Token". Reverse: relief of a Boeing 307 plan flying above clouds with lettering "4-engine over weather Stratoliner". Edge smooth with STERLING and a Balfour (?) makers mark. Metal 92% sterling silver (ASW 0.416 ozt). weighs 14 grams, Diameter 31 mm. Reference National Space & Air Museum inventory number A19640451000, Princeton University Library catalogue (Newman 3?). Silver content confirmed on Lot 14 Auctions electronic metal verifier and weight on our electronic balance. *** Lot 14 Auctions is not a professional numismatic grading agency. Consigner information is provided as a courtesy to our bidders. Please review pictures to determine condition information. ***