The stamp gained notoriety after it was included in the Michel catalogue as a regular stamp and given the number 67.
Collectors who aspired to put together a complete collection of issues of the Reichspost had an interest in acquiring this stamp.
However, because philatelists generally considered the stamp a self-made variety, not an official issue by the Reichspost, the #67 assignment was heavily criticised and eventually withdrawn.
As a result, prices for the stamp have declined.

The stamp has been forged.
The stamp gained notoriety after it was included in the Michel catalogue as a regular stamp and given the number 67. Collectors who aspired to put together a complete collection of issues of the Reichspost had an interest in acquiring this stamp. However, because philatelists generally considered the stamp a self-made variety, not an official issue by the Reichspost, the #67 assignment was heavily criticised and eventually withdrawn. As a result, prices for the stamp have declined. 
The stamp has been forged.
Vineta provisional