Persia. (Switzerland). 1902. Registered envelope with oval 'Agence Ziegier & Co/ Sultanabad/ 19 Jul 1902' firms chop in violet, addressed to Switzerland bearing Yvert 152, 12c blue (2) tied by Sultanabad date stamp with framed 'R/ Sultanabad' and 'Registered' hand-stamp on face, routed via Teheran and Baku with Zurich arrival '7th Aug 02' on reverse and forwarded to Wolfenschiessen.
Very attractive item.