Keywords: 1910-BartoloméMasó.jpg en Bartolomé Masó stamp from Cuba 1910 from the definitive series on Patriotic Cubans The purple portrait plate was placed into the printing press upside down for several sheets yielding the significant error Cuban government 1910 Cuban government 1910 1910-02-01 PD-old Bartolomé Masó Stamps of Cuba 1910 stamps |