Pietro Nicastro was a brother of the famous engraver Vittorio Nicastro.
San Marino, Founding of fascist party (1)
Ecuador, Literacy campaign
Argentina, San Martin 50c and 75c
Argentina, Eva Peron 5p and 20p (1)
Argentina, Back of 500p banknote P278 (1)
(1) Collecting by engraver, Stampcommunity website