Bidspirit auction | Colour error, printing variety on

Colour error, printing variety on a sheet of Israel stamps, 1974, centenary of the Universal Postal Union, U.P.U. 1874-1974, Postal Union Centenary, Michel 620. Complete sheet of 15 stamps of 1.30 face value with full tabs. The sheet shows a pronounced colour shift, the background of the stamps printed grey instead of the gold shade of the normal issue. Sheet numbers 195100 and 180774, plate number 421, the postal emblem in the selvedge. Mint with original gum. The third photograph is included for comparison with a normal sheet and is not part of the lot.