Lot 1179 S1901, 4¢ Pan-American, center inverted, overprinted "Specimen", bottom margin plate "1145" number single with siderographer's initials below, full o.g., tiny hinge slivers sensibly reinforcing perfs, clear strike of "Specimen" handstamp neatly applied in margin at left, fresh with rich color, Fine and attractive, ex-Colonel Green, Cunliffe; with 1996 P.F. and 2009 P.S.E. certificates.
Scott No. 296Sa $11,500.
THE UNIQUE PLATE NUMBER SINGLE OF THE 1901 4¢ PAN-AMERICAN INVERTED WITH SPECIMEN OVERPRINT.
Only four examples of the 4¢ Pan-Am Invert with plate numbers are recorded, this being the only example bearing the extremely rare Specimen overprint. Only 13 examples of this specimen have been expertized by the P.F. and is without question far rarer than its non-specimen counterpart.