Great Britain 1962 3d National Productivity Year error, SG632a Memorabilia Very scarce in this form

Very scarce in this form

with additional large voilet h/s covering upper row 'return to'

block of four imperforate imprimaturs with "NPM IMPRIMATUR" handstamp on reverse

and this one is much above average condition making it an important rarity

represents a fine quality piece with fresh colour

Great Britain 1962 3d National Productivity Year error, SG632a Memorabilia Very scarce in this formGreat 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