1951 Siking (7 Dec) to Czechoslovakia, f.w. S1 National Emblem completet set + C11, A1 and Tiananmen R series issue odd values, tied by
1951 Siking (7 Dec) to Czechoslovakia, f.w. S1 National Emblem completet set + C11, A1 and Tiananmen R series issue odd values, tied by Siking cds. Transit Peking (8 Dec). Censored and resealed in Czechoslovakia. Nice franking. Censorship is also unusual.1951.12.7 西京寄捷克斯洛捷克，貼特1國徽全 + 紀11、航1及天安門普票散票，銷西京日戳。12.8經北京。於捷克斯洛捷克檢查重封。貼票出色，檢查重封亦較少見。
