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
INDIA (1993) Dr. Kotnis*. Operating theater*. Variety in color grey instead of violet-grey. Scott No 1459, Yvert No 1204.
AVAILABLE AT $50
DOMINICAN REPUBLIC (1952) Gautier Hospital*. Margin pair with double perforations between 2 stamps. Scott No 449, Yvert No 422.
AVAILABLE AT $15