Two denominations are issued : 1 penny and 2 pence. The printing plate is made in intaglio by a local engraver in imitation of the stamps then applicable in Great Britain with the profile of Queen Victoria.
They are extremely rare : the printing was stopped in the following year when the administration decided to put the wording Post Paid instead of Post Office on the left edge. 500 'Post Office' stamps of each value had been edited. A cover that circulated with each of the two stamps was sold for CHF 6.2M including premium by David Feldman in 1993.
The printing plate surfaced in 1912. It is unique in its kind. A single example of each denomination appears on this small piece of copper 81 x 61 mm. Because of this rudimentary configuration, the stamps had to be printed individually.
Considered as an outstanding philatelic treasure, the plate enters around 1930 in the collection of Maurice Burrus but will not appear in his succession. The mystery is lifted in 2013 when the family finds it by chance in the inventory of a further deceased estate : a niece of the collector had kept it in his memory inside a small cover without ever imagining its inestimable value as a witness of the pioneering era of the postage stamp.
The plate is estimated in excess of € 2M for sale on December 1 in Geneva by David Feldman, lot 1. Here is the link to the website of the auction house. The image below is taken from the press kit. Please watch the video shared by David Feldman explaining in details this rediscovery.
SOLD for € 1.1M before fees