Great Britain 1962 3d National Productivity Year error, SG632a Northern Rhodesia stamps and stagecoaches throughout the southern

and stagecoaches throughout the southern states

but unique examples with the red 'SPECIMEN' handstamp

First run in 1839

A lovely fresh positional block

providing independent proof of authenticity

Great Britain 1962 3d National Productivity Year error, SG632a Northern Rhodesia stamps and stagecoaches throughout the southernGreat Britain 1962 3d National Productivity Year error, SG632a. A very fine unmounted mint, with full original gum, right hand marginal example with light blue (Queen's portrait) omitted. Missing colour also affects the arrows over the map of the UK and 'N' of 'NPY'. Offered with an example of the normal stamp for the purposes of comparison and presentation. A lovely example of this extremely visual and desirable printing error. Very scarce. Pierron