This is the national flag of the Republic of San Marino. The flag is composed of two parallel horizontal rectangles of white and light blue from top to bottom. The center of the flag is a blue heart-shaped national emblem surrounded by oak and laurel branches. On some platforms the system displays SM. It generally means the Republic of San Marino or the territory of San Marino, its capital is the city of San Marino.
🇸🇲 is the Emoji of a country/region‘s flag, and its meaning is flag: San Marino. The Emoji 🇸🇲 is composed of two regional indicator letters, namely 🇸 and 🇲. The country/region's 2-letter code for San Marino is SM, so the letters corresponding to the two region indicator letters are S and M. 🇸🇲 is displayed as a whole flag on most platforms and as a two-letter symbol on a few platforms.