10 Lire Prova

San Marino's 1925 gold coinage was struck under the terms of its monetary convention with Italy, which obligated the microstate to align its issues with the Italian lira system. The "Prova" designation marks this as a trial or presentation strike, produced in minimal quantities for official approval rather than general release. Most were likely distributed to government officials or retained in the state archives.

Montenegro lists this among the great rarities of Sammarinese numismatics.