Switzerland
Overprinted the Mi: CH P49x
| Country: | Switzerland |
| Type: | Postage stamps |
| Series: | Postage Due (1937) |
| Nominal: | 40 Ct. |
| Year: | 1937 |
| Material: | smoothness backside |
| Perforation: | comb 11½ |
| Mintage: | 180,000 |
