# Zurich 4 and 6

> Swiss postage stamps

**Wikidata**: [Q248618](https://www.wikidata.org/wiki/Q248618)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Zurich_4_and_6)  
**Source**: https://4ort.xyz/entity/zurich-4-and-6


## References

1. Großes Lexikon der Philatelie (2 ed.)
2. Michel Schweiz-Spezial (35 ed.)
3. Freebase Data Dumps. 2013