Lot   Cat.#
Net Price
490  O23 var

Official stamps

1894, Hippopotamus, red overprint in capital letters "O S" on $1 ultra and black, this overprint in green or black had been used for $2 and $5 of the set respectively, full OG, LH, VF, expertized by L. Miro

Stamp Auction #79, September 14, 2018. Raritan Stamp, Inc