|Stamp Name||Air 4 Hongkong Print Air Mail Stamps (1940)|
|Stamp Cat Standard||Air Mail Stamps|
|Stamp Cat||Relics, Aviation|
|Dimension of stamps(mm.)||41×22.5|
|Size of souvenir Sheet (mm.)|
|Printer||Commercial Press, Hongkong|
The stamps were issued since June 20, 1940, the issue date of each stamp follows：
Stamp No. Issue date Watermarked A4.1 20. 6.1940 A4.2 20. 6.1940 A4.3 20. 6.1940 A4.4 23. 5.1941 A4.5 3.12.1940 A4.6 23. 6.1941 A4.7 23. 5.1941 A4.8 23. 5.1941 A4.9 26. 6.1941 A4.10 20. 6.1940 Unwatermarked A4.11 A4.12 21. 4.1941 A4.13 21. 4.1941 A4.14 23. 5.1941 A4.15 3.12.1940 A4.16 23. 5.1941 A4.17 23. 5.1941 A4.18 23. 5.1941 A4.19 23. 5.1941 A4.20 23. 5.1941
The outbreak of the War with Japen made it necessary for the printing of air mail stamps in Hongkong, which was undertaken by the Commercial press, Hongkong by new plates made out of the original dies of the third Peiping Print. The design, wording, face value, etc., remained unchanged except for following variations：
3rd Peiping Print
(2)The gum on the back is yellow, thick and bright.
(3)In the character 〝票〞(piao) the dot on the left side at the bottom is connected with the 8th stroke(horizontal) and the 9th stroke in the form of a hook (P-42).
(2)The gum on the back is white, thin, but not bright.
(3)In the character〝票〞(piao) the dot on the left side is not connected with any other part of the character (P-43).
The air mail stamps of the Hongkong Print consisting of ten denominations are printed on two kinds of paper, one bearing the watermark of the Seal character 〝郵〞, and the other being unwatermarked paper. The former is similar to the paper on which definitive stamps of the Hongkong Chung Hwa and Dah Tung Prints were printed (P-31).