The republic of San Marino has recently standardized its coat-of-arms. Changing a coat-of-arms or altering its design is a statement in itself even though keeping a continuity within its main elements. (The old coat-of-arms)
Whilst the main elements of the coat-of-arms remain essentially the same, three towers on three hills, each surmounted by a white feather. What really changed was the shape of the towers which are shown from the side with the feathers being also shown from the side, below one can see the design of the new coat-of-arms of San Marino, and you can follow this link to see the captain-princes (president’s) decree.
The three towers recall the three citadels of San Marino: La Guaita, La Cesta and La Montale.