Poland - Black coal mine - KWK "MARCEL" - Radlin - miner mark - 3 - straight cut top - third shift

Al - 32,5x32,5 mm  

Obv.: KWK / "MARCEL" / (number)

Rev.: (blank)

KWK = Kopalnia Węgla Kamiennego = Black Coal Mine

Until 1945 coal mine name "Emmagrube"

As on photos, some wear and damage.