# war tax stamp

> revenue stamp required in addition to regular postage during a war

**Wikidata**: [Q2390844](https://www.wikidata.org/wiki/Q2390844)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/War_tax_stamp)  
**Source**: https://4ort.xyz/entity/war-tax-stamp


## References

1. Lexikon der Philatelie (5 ed.)
2. Freebase Data Dumps. 2013