拍品 1265
1265
unused Block of Four $50 on $10 purple, with four stars, a block of four from the right of the sheet, fine unused. Yang's handstamp on the reverse. Photo
unused Block of Four $50 on $10 purple, with four stars, a block of four from the right of the sheet, fine unused. Yang's handstamp on the reverse. Photo

細節
unused Block of Four $50 on $10 purple, with four stars, a block of four from the right of the sheet, fine unused. Yang's handstamp on the reverse. Photo
Yang EC335, US$3000; S.G. EC286, JPS HC4