1920 Czechoslovakian Postage Due Stamps Overprinted "SO 1920"
Eleven values of Mucha's 1919 postage-due stamps received the SO 1920 overprint – 5 to 50 h in blue and 100, 500 and 1000 h in red, though this was not always strictly followed.
Read more
Printings ranged from 360,000 (10 h) to 110,000 (500 and 1000 h). As with the other SO 1920 stamps the issue dates are unknown; the earliest recorded use is 17 February 1920. The 5 h exists with an inverted overprint, the 100, 500 and 1000 h with a vertical one.
Sources: Burda Auction: SO 1920
| SW | Pofis | Type | Value | Colour | Description | Mint | Used |
|---|---|---|---|---|---|---|---|
| 1 | SO33 | A | 5 H | olive | Blue overprint | ||
| 1A* | SO33 a | A1 | 5 H | olive | Black overprint | ||
| 2 | SO34 | A2 | 10 H | olive | |||
| 3 | SO35 | A3 | 15 H | olive | |||
| 4 | SO36 | A4 | 20 H | olive | |||
| 5 | SO37 | A5 | 25 H | olive | |||
| 6 | SO38 | A6 | 30 H | olive | |||
| 7 | SO39 | A7 | 40 H | olive | |||
| 8 | SO40 | A8 | 50 H | olive | |||
| 9 | SO41 | A9 | 100 H | brown | |||
| 10 | SO42 | A10 | 500 H | green | |||
| 11 | SO43 | A11 | 1000 H | violet | |||
| 1‑11 | Set (* Stamp not included in this set) |