Postage due stamps
Czechoslovak postage due stamps were used to collect insufficient postal fees. The category includes classic and later surcharge issues used throughout the postal system.
MNH
MNH
MNH
−9%
MH
MNH
Czechoslovak postage due stamps are a key element of postal regulation history.
Postage due system
These stamps were applied to underpaid mail and reflect standardized postal fee enforcement.
- classic postage due issues
- surcharge and numeral designs
- postal regulations
- important postal history usage
A fundamental collecting area of postal administration.