Stamp: Pro Sevilla (Spain, Civil War: Cinderella Stamps(Local Issues - Province of Seville) Col:ES-SE 1938-01A
Austria Or Germany WWI Cinderella ? - Stamp Community Forum
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1万字以上】お爺ちゃんの家から出てきた古い切手に価値はあるの? - DLチャンネル みんなで作る二次元情報サイト!
Cinderella stamp - Wikipedia