This is a reproduction of a Soviet PMK-40 (ПМК-40) anti-personnel landmine. These were introduced in 1940 and saw use through the 1950's. They originally contained 90 grams of TNT and were made of bakelite or impregnated cardboard. Originals are notoriously fragile. This reproduction is made from resin and copied directly off of an original. It is a non-functional display piece. Price is for one.