1919 Republic $1 booklet with contents of Junk 1c orange 4 panes of 6 (missing pane of 4) & 3c green 3 panes of 6, plus a pr (missing 4 stamps). F-VF MNH, front cover faded, contents quite fresh. Chan B5. SG SB1 cat £18,000 = A$34,000. Great rarity with only several recorded & mostly in worse condition than this example. 2023 Ceremuga photo cert . (P) (Image1)

Estimate AU$1,600

1925 Surcharge issue '3 Cts.' in red on Junk 4c slate-grey 2nd Peking printing, error opt INVERTED. Superb fresh MLH, nice original gum & excellent centring. Sc 274a cat US$300,000. SG 370a cat £110,000. Chan 281a. CSS 327b cat US$250,000. One of the greatest rarities of 20th Century Chinese philately, certainly the top of the 'Four Treasures of the Republic'. Only ten examples of this error were originally reported discovered in 1925, seven mint & three used. Amazing opportunity to purchase this pristine quality rarity, which is offerred with a very conservative reserve. 2010 Philatelic Foundation (New York) photo cert. (P) (Image1)

Estimate AU$80,000

1930s cover franked USS Black Hawk franked Chicago Century of Progress 1c blk of 4 tied by 'USS Black Hawk Asiatic Station Chefoo China SEP 3 1934' pmk, or franked Mt Rainier 3c tied by USS Black Hawk Shanghai China OCT 27 1934 pmk, plus with printed Navy Day pictorial cachet. VF. (2) (Image1)

Estimate AU$70