Schaefer 40th Anniversary Commemorative Coin, Signature and exquisite collectible coins. 2024 - Schaefer 40th Anniversary in Singapore, Uncirculated Commemorative Coin. Produced in 2024, 60 uncirculated coins collection. Weight: 30gm / Material: Zinc Alloy / Finishing: Shiny nickel Silver / 3D tool renderings, Die molded for catching enamel color and treatment.