Switzerland
Black SHINY overprint on 1923 MiNr. CH 179
| Country: | Switzerland |
| Type: | Postage stamps |
| Series: | Airmail |
| Nominal: | 10 Ct. |
| Year: | 1935 |
| Material: | Normal granite paper |
| Perforation: | comb 11½ |
| Mintage: | 230,000 |
