This is a small aluminum mold from Meisterzinn from Nurenberg. It holds drummer.
Name producer: Meisterzinn
Used for: casting pewter figures
Material mold: Aluminum
Figure type: round
Figure size: 40 mm or 1 5/8 inch
Condition: never used / still in original package
Figure not included. Please check video attached on how to use mold for casting at home! Also check our article: Vintage Stuff Manmade : Toy Soldiers