| Stamp SN | CE01 |
| Stamp Name | Shensi Air 1 Dr. Sun Yat-sen Issue Surcharged as Air Mail Unit Postage Stamp with the Overprinted Character "Shen" (1949) |
| Stamp Cat Standard | Air Mail Stamps |
| Stamp Cat | Chiefs Of State, Emblems |
| Issue date | 1949-05-01 |
| Suspersion date | |
| Dimension of stamps(mm.) | |
| Size of souvenir Sheet (mm.) | |
| Printer | |
| Drawer | |
| Designer | |
| Photographer | |
| Engraver | |
| Creative Director | |
| Sheet composition | |
| Print color | |
| Process | |
| Paper | |
| Back | |
| Perforation |
The original stamps overprinted as air mail unit postage stamps are those of $7,000 denomination of Dr. Sun Yat-sen issue of the second Shanghai Dah Tung Print. The characters〝國內航空郵資已付〞(domestic air mail postage paid) in No. 5 Regular Writing characters appear in two vertical lines in black, between which the character〝陝〞(Shen-abbreviation for Shensi Province) was overprinted in brackets at the bottom.