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Pontifical - 20 cent. Lilac grey n.28c

1868 - Envelope sent from Civitavecchia to Rome franked with a 20 cent. lilac grey n. 28c. The "grid" cancellation was used on the postage while the double circle of Civitavecchia was printed on the letter without indication of the year (10pt.) Very rare set. Cat. 24,350. (A+) (Cert. Giacomo Avanzo, En. Diena)