PANAMA (1949) Roosevelt*. Arosemena*. Pair with wrong overprint of anti-cancer surcharge (and misregistered). Scott No RA28, Yvert No PA106. This surcharge only appears on the 10c stamp (RA29).
AVAILABLE AT $60
PANAMA (1949) Roosevelt*. Arosemena*. Single with double overprint of anti-cancer surcharge. Scott No RA28, Yvert No PA106.
AVAILABLE AT $30
PANAMA (1949) Roosevelt*. Arosemena*. Pair with one overprint of anti-cancer surcharge "EI" instead of "EL". Scott No RA28, Yvert No PA106. This error occurs only once per sheet.
AVAILABLE AT $25
PANAMA (1949) Roosevelt*. Arosemena*. Block of 4 with doubled overprint of anti-cancer surcharge. Scott No RA28, Yvert No PA106.
AVAILABLE AT $80
PANAMA (1968) Flag of Brazil*. Rimet Cup*. Vertical misperforation resulting in only half the stamp appearing. Scott No 4368c.
AVAILABLE AT $30