Netherlands 1976 - 300セントのPOSTSTAKING刻印を、完全に上下逆さまにした状態で、4つずつのブロックで - met Befund H. Vleeming

From the Netherlands, a postfris 1976, 300 cent POSTSTAKING with overprint fully upright in a block of four, catalogued with Befund H. Vleeming, with certificate.