XXV anniversary U. H. M. issue - X, Christmas 1991 issue - Y

Abstract

These sets were printed in multicolours using the same set of four colours, for each va,lue, in issues X and Y. Colour checks in the form of coloured discs, 3mm in diameter, are seen in the right hand margin, next to the last stamp of the bottom row, in all Panes of all values, in issues X and Y. It might be of interest to mention here that in issue Y, the colours from top to bottom in the 3c+ 1 c value are Yellow, Magenta, Cyan and Black, whilst in the other two values they are Cyan, Magenta, Yellow and Black. The colours from top to bottom, correspond to the colours used for Pane numbers, from left to right, in all Panes, of all values in issues X and Y. Cumulative totals of progressive columns of stamps are seen in the top and bottom margins, printed in black, in all Panes, of all values, in issues X and Y. [excerpt]