on 15c. olive-green, a block of four with surcharge inverted and a vertical pair, the upper stamp with variety "Flve" for "Five", fresh and fine mint. S.G. 233a, 233c; £218" /> unused 1890<I> "Five Cents"</I> on 15c. olive-green, a block of four with surcharge inverted and a vertical pair, the upper stamp with variety<I> "Flve"</I> for<I> "Five"</I>, fresh and fine mint. S.G. 233a, 233c; £218 | Christie's