San Marino 1918/1925 - 10 interesting imperforate proofs in pairs

San Marino - Interesting collection of 10 imperforate proofs in handsome horizontal/vertical pairs with sheet edge, including their single reference specimen later adopted, thus composed:

1918 - Pro Combattenti, proof on the frame of the 2 cent values (Sassone No. 54)
1918 - Pro Combattenti, proof of the central part with the statue (Sassone No. 54/59)
1918 - Pro Combattenti, proof of the central part showing Views L.1, L.2, L.3 (Sassone No. 60/62)
1921/23 - Cifra or Veduta, proof cent.80 (Sassone No. 78)
1925 - Tasse, proof 10 lire orange (Sassone No. 27)

Please view the photos as an integral part of the lot.