Lot 51446 – 1898 3c on 1c black-violet, fourth printing, position 4, inverted surcharge variety, tied by a blue Puerto Principe cds

1898 3c on 1c black-violet, fourth printing, position 4, inverted surcharge variety, used, tied to a piece by a blue Puerto Principe cds, very minor tone spots to tips of some perforations, strong colour, well centred, a fine and scarce example of this overprint error; ex Prats.