300 Lire Small cheque

San Marino's Cassa di Risparmio issued these small-denomination cheques in 1977 as a direct response to Italy's chronic coin shortage — a problem so severe during the 1970s that businesses across the peninsula resorted to handing customers candy, postage stamps, and telephone tokens as change. San Marino, though reliant on Italian currency under the 1939 monetary convention, was free to introduce its own fiduciary substitutes, and it did.

The 300 Lire denomination is notable. Most Italian-sphere emergency issues clustered around 50, 100, and 150 Lire — values that mapped to actual coin gaps. 300 Lire suggests local pricing realities specific to San Marino's retail economy at the time.