Check the listing for details. Vintage Electric Peanut Warmer & Vending Machine by Roy Stringer. Condition: Used. Listed at 2150.00 USD. The clear glass globe displays the peanuts while the electric base gently warms them for serving. Maker's label reads: "Roy Stringer Co., Ltd., San Marino, Calif., U.S.A. - Patented.". c. 1930s-1940s; Roy Stringer Co., Ltd. - San Marino, California.