1892: Coat of Arms '10 miC' on 20 C. red, a fresh example of this exceedingly rare stamp of which only four are knowwn to exist (perforation cut with scissor). The rarest stamp in the philately of San Marino. Cert. Colla (2009)
1997: Castelli Samarinese, complete set of nine values in unused mint gutter pairs, not issued as such, printed in miniature sheet of 20 values Sassone not listed.