FINE AND IMMENSELY RARE UNUSED EXAMPLE OF THE OP-PC FOR CP-PC ERROR OF LETTERING. ONE OF THE SMALL HANDFUL OF ORIGINAL-GUM EXAMPLES IN EXISTENCE.
This is the most significant and visually constant error of Great Britain Queen Victoria stamps. This error occurred on all printings from Plate 1. Remarkably, the error went unnoticed during the four years of printing runs. In 1894 it was mentioned in an American journal, 24 years after release.
Ex Seymour and Baillie. With 1989 R.P.S. certificate. SG £30,000. Listed but unpriced in Scott.