Uruguay: 1858 180 centavos green, an unused tête-bêche pair.
Printer: B.L. Mège
The second issue of postage stamps for Uruguay appeared in 1858 in 120, 180, and 240 centavos values. These are inscribed “Montevideo” and were printed from lithographic stones in sheets of seventy-eight or two hundred and four (240 centavos).
One of the impressions on the printing stone for the 120 and 180 centavos was inverted, and this has resulted in some of the worlds rarest stamps when in pairs one is inverted in relation to the other or tête-bechê. Of the 120 centavos only three and of the 180 centavos only two tête-bechê pairs exist.