1863 - 15c lithographic 2nd type with light double printing at the bottom, in mixed franking with Sardinia 5c green and 40c pink vermilion on registered letter from "FIRENZE 15 GIU 63" to Bologna. Extremely fine tri-color franking with the 15c lithographic 2nd type. Cert. Bottacchi (13+Sard. 13Ea+16F - Zanaria-Serra € 6.500)
