PONTIFICIO 1867 - 13: 2c verde giallo su lettera per Viterbo
1867- Papal States: 2c yellow-green used on its own on cover, from "ROMA 25 GEN 68", cancelled with lozenge postmark, the cover has on back the arrival handstamp "VITERBO 26/1/68. Very nice. Giulio Bolaffi certificate (Sassone n.13 - € 2.700)
