Great Britain 1973 3½p Christmas error, SG948d.
Very fine unmounted mint, with full original gum, example with blue (legs, robes) omitted. Offered with normal for comparison.
The missing colour affects portions of the king's robes and the boy's outfit. Only one sheet was completely affected by the error while all rows apart from the top were affected in a second sheet. It is unlikely all copies from both sheets have survived.
A scarce and reasonably priced QEII stamp error. Pierron records only 150 mint examples.