"1898 Provisional stamps. Stamps from previous emissions with overprint typographed by the newspaper La Razon of Montevideo, used to pay the new postal rate put into effect on July 23, 1898. The rarest stamp in this series is cataloged as number 138A in Ciardi's specialized catalog of the stamps of the Oriental Republic of Uruguay. This stamp was issued but did not circulate officially. 3000 of them were overprinted, and it is quite difficult to find in standard collections of Uruguay."