376. Auktion

1902, the unique proof of Sperati's "400 REIS" overprint surcharge that may have been used for finished forgeries of several colonies, first reported in Sperati II, only Angola has been seen as a finished reproduction but others could exist from Cape Verde, Mozambique, Portuguese Congo, Portuguese Guinea, St. Thomas and Prince, or Zambesia, ex Sperati archives and Carl Walske  

1881, 20 r. rose, single signed proof in color, Sperati I describes this 20r proof, ex Robson Lowe, as the only proof that had been examined by the BPA, no finished reproductions are known, ex Carl Walske