Special Philatelic Collection - Matsumoto Kosho Kogyo Products Stamp-shaped plate, pure silver with gold plating (Kabuki series). There is a marking on the surface indicating pure silver with gold plating. The gold is pure gold, but the amount of pure gold contained in the plate is unknown. For reference, the weight of the plate has been measured. Would you like to add it to your collection? This collection was gathered quite a while ago, and I have more. I plan to list them gradually. Thank you.