LIBERIA (1897) Hippopotamus*. Regular issue overprinted SPECIMEN. Scott No 57, Yvert No 42. Scarce!
AVAILABLE AT $30
LIBERIA (1950) UPU emblem*. Imperforate S/S overprinted "U.P.U. JUBILEE SPECIMEN". Scott No 67a, Yvert No BF2.
AVAILABLE AT $40