1912 (23 Oct.) An overprinted 'ROC' on Imperial 4th issue stationery card 1c green, tied by bilingual 'TIENTSIN' cds, sent to Shanghai, with bilingual 'SHANGHAI/27.12.12' arrival cds, fine. Photo (Image1)

Est. HK$800-1,000

1936 (25 Oct.) A SYS 5c green stationery envelop sent to Hong Kong, with additional the 40th Anniv. of Postal Service 2c, both tied by bilingual 'CANTON' cds, with 'ROC Revolution' slogan frame chop in black char. On reverse with another kind of slogan frame chop in violet char. 'To Celebrate Chiang Kai Shek Birthday...', 'HONG KONG/26.10.36' arrival cds. Photo (Imagea)

Est. HK$2,500-2,800

1913 A ROC Flag design stationery card to Hong Kong, tied by bilingual 'KAYING' cds, bilingual 'SWATOW/31.10.13' transit. Photo (Image1)

Est. HK$800-1,000

1913 (10 Nov.) A ROC Flag design stationery card to Hong Kong, tied by bilingual 'HOYUN' (河源) on reverse with bilingual 'SHEKLUNG/12.10.13' (石龍) arrival cds, horizontal creased line. Photo (Imagea)

Est. HK$1,200-1,500

1913 (14 Sept.) A ROC Flag design stationery card to Hong Kong, tied by bilingual 'LUNGKONGHUI' (龍岡墟) cds and 'LUNGKONGHUI/KWAICHUNG' (龍岡墟/葵涌) Tombstone in red, bilingual 'CANTON/KAYINGVHOW' and 'SWATOW' transit, alongside 'No.3/Postman' chop in black frame. Photo (Imagea)

Est. HK$6,000-7,000

1913 (15 Nov.) A ROC Flag design stationery card to Hong Kong, tied by bilingual 'SWATOW' cds. Photo (Image1)

Est. HK$800-1,000

1913 (25 Jan.) A ROC Flag design stationery card to Kaying, tied by bilingual 'SWATOW' cds, a few dirt marks. Photo (Image1)

Est. HK$800-1,000

1913 A ROC Flag design stationery card to Kaying, tied by char. 'CANTON/LOKONG' cds, date not clear, with the unusual 'CANTON/TAILUNGTIEN' (大龍田) faint bilingual 'KAYING' arrival cds. Photo (Image1)

Est. HK$1,200-1,500

1913 A ROC Flag design stationery card to Kwaichung, tied by faint 'LUNGKONGHUI' (龍岡墟) cds, bilingual 'KAYING' transit and the rarest bilingual 'SHUMCHUNG' (深圳) transit and 'LUNGKONGHUI/KWAICHUNG' (龍岡墟/葵涌) Tombstone in red as arrival. Photo (Image1)

Est. HK$10,000-15,000

1913 A ROC Flag design to Kaying, tied by char. 'CANTON/LOKONG' cds, with char. bilingual 'HINGNINGHSIEN' transit, 'CANTON/TAILUNGTIEN' (大龍田) faint bilingual 'KAYING' arrival cds. Photo (Image1)

Est. HK$1,000-1,400

1915 (28 Mar.) A ROC Flag design stationery card to Zurich, Switzerland, bearing Junk 3c, both tied by 'LILONG CHURCH' (李浪教堂) private chop in red char. And the rarest bilingual 'SHUMCHUN' cds x 2, bilingual 'CANTON' and 'SHANGHAI' transit. with 2 punch holes at the top. Photo (Image1)

Est. HK$8,000-10,000

1915 (3 Apr.) A ROC Flag design stationery card to Zurich, Switzerland, tied by bilingual 'SWATOW' cds and 'SHANGHAI' transit. With 2 punch holes at the bottom. Photo (Image1)

Est. HK$800-1,000