On the 8-th of April after 20 days of traveling I got this nice cover from Italy. The top stamp features the St. Mark's Square (which makes up the word combination SMS that has nothing common with massages like I thought before) in Venice. The bottom stamp is devoted to the 150-th anniversary of the first Sicilian stamp.
Here is some more information:
The first stamp features a silhouette of part of Venice’s monumental St. Marks Square, enveloped in the dark of night and illuminated only by the moonlight; on the right, one can see the logo of SMS Saint Mark’s Square Venice.
The word “ITALIA” and the denomination “€ 0,60” complete the stamp.
The second stamp features, on the left, the horseshoe-shaped postal marking used to cancel stamps in the Kingdom of Sicily, and on the right, the ½-grana stamp issued on 1 January 1859, with the effigy of King Ferdinand II, which bears the impressed cancellation. In the background is a section of the customs map of the Kingdom of the Two Sicilies.
The words “150° FRANCOBOLLI DI SICILIA” (150th anniversary stamps of Sicily), “ITALIA”, and the denomination “€ 0,60” complete the stamp.
Thank you very much, Giovanni!