The Russian Empire. Medal "For diligence" of the period of the reign of Emperor Nicholas I (1825-1855).
Established in December 1801. The medal was awarded to officers, lower military ranks, ranks of the convoy guard, police and fire brigades, civilians of all departments, including women, for long service, as well as for various services rendered to the government, including for the fight against the revolutionary movement.
Silver. The diameter is 29.16 mm. Weight (without ring) 14 grams. In the neck trim, the initials of the carver are "A.L.".