![Image of the stamp type M13.](https://czechstamps.imgix.net/stamp-types-general/M13.jpg?w=200&exp=1)
Stamp Type:
M13
Postal Office: PRAHA 1
Stamp Number: 11
Official Period Of Usage: 19181028 - 19190000
Personal Registration Of Usage:
No stamp has been registered yet.
Comment:
Registrations
Background For The catalogue
The catalogue is based on The Monografie Československých Známek Volume 16, 1 + 2, and Volume 17, 1 + 2.