ARGENTINA (1975) Frigate "Heroina"*. Map of Malvinas*. Variety with double impression of frigate from sheet margin. Scott No 1033, Yvert No 1050.
AVAILABLE AT $30
CUBA (2017) Catamarans. Imperforate block of 4 with massive color shift.
AVAILABLE AT $100
BANGLADESH (1999) Mail boat*. Shift of color red or yellow in block of 4 resulting in doubling of inscriptions. Scott No 592.
AVAILABLE AT $30
CUBA (2017) Power boat. Imperforate block of 4 with massive color shift. Pilar beach.
AVAILABLE AT $100
CUBA (2019) Chinese junk*. Block of 4 with colors yellow and brown missing. Wuhan China Philatelic Exhibition. Scott No 6174.
AVAILABLE AT $100