Alderney. Golden Jubilee miniature sheet. Issued 6 February 2002. Normally printed in four process colours – cyan, magenta, black and yellow – plus gold, at least one example has been confirmed missing black leaving the miniature sheet in a bluish-grey wash.
The only other major error recorded from Alderney is missing silver from the 2008 £5 Lion Rampart definitive. It’s believed a sheetlet of five was affected.