1894, 5 Lira Registered Envelope with multi-colored frank. H&G # B1, USED Jubilee Envelope. This 5 lira registered envelope has the physically largest and most beautiful stationery frank in the world. In addition, this example was USED with the excessively RARE HAND-MANUSCRIPT REGISTRATION NUMBER (not with the later printed numbers) and was struck with possible the earliest usage date for the envelope.
This 5 lira franking is a very high franking - because these envelopes were made to carry at least 500 Lira worth of the San Marino Jubilee Stamp Issue - so correctly used, they could only be sent to stamp dealers.
This cover was send to Scott Stamp & Coin Company, New York and has perhaps the lowest registration number known, #10. It was used on October 5, 1894, sure from the first group to be send (a similar example, #12 was sent on the same day).
Regular used envelopes with printed registration numbers are listed in the catalogs between 2500 € and 3000 €, this m/s registratio (Image)

1947, Ganzsachen-Doppelkarte 4 Lire blau "Die drei Vulkane" ungebraucht )Mi. 360.-) (Image)