Early Wagner Sidney O Cast Aluminum Tea Pot Kettle Ohio 7B 1915-1920 not iron For Sale

Early Wagner cast aluminum teapot. Bottom markings; curved Wagner, straight Sidney, and raised heat ring on bottom date the piece to 1915-1920.
Outside discoloration but intact. Inside lining largely damaged but no impact on aluminum. Aluminum lid handle broken off. Wood handle worn but intact.
Size 7 B. I couldn't find what that means, but the pot is 7 inches high.
Dimensions are 8 1/4 inches across bottom. 11 inches across top including spout. 7 inches high. Weighs just under 3 pounds.