We think it far more likely that the fact of the stamp being on watermarked paper should have escaped the notice of M. Moens, than that its issue should have been delayed for nearly a year after its arrival in the Colony. The one printing of the Four Pence yellow had been a small one; it consisted of only 9,000 stamps, as compared with 15,000 of the Four Pence blue, on unwatermarked paper, issued in 1866. We do not know for what reasons the postal authorities had changed the colour of this value from blue to yellow, but they could not have been very important ones, as the blue Four Pence of Issue 4 was, as we have seen, undoubtedly still allowed to be used in 1873—that is, about four years after the introduction of the Four Pence, yellow, so it is evident that the use of the two stamps was concurrent for some time at least. It is stated in the London Society’s West Indian Catalogue that the Four Pence value became “disused,” but this cannot have been the case, as we have the evidence of postmarked specimens of the yellow Four Pence that it was in use in July, 1876, and we know that a fresh supply of the value was sent out in 1877. There is therefore every reason to believe that although the Four Pence, deep blue, of the issue now under consideration had probably been seen by M. Moens when first issued, he mistook it for the old blue Four Pence that was still being occasionally used, and it was not until 1878 that he discovered the difference in the paper, and chronicled the watermarked stamp in the _Timbre-Poste_. There is every excuse to be made for this temporary omission, as the great majority of the issue is printed on the very thick variety of paper which approaches thin card, and it is a matter of great difficulty to detect the watermark in this paper, even when it is known to be there. There was only one very small printing, 6,000 stamps, made of this Four Pence, and so it is naturally very much rarer than either of the two stamps of the same denomination previously issued. In addition to this, its rarity unused is even out of all proportion to the smallness of the printing, and we may be certain that since it was unchronicled in the philatelic publications of the day it was not put into stock by the dealers, and that the unused specimens we occasionally find have been preserved by accident rather than by design. It is always perforated B, and the colour, which would alone distinguish it from the Four Pence of Issue 4, shews no shades, except those due to oxidation, to which it has a certain tendency. Issue 13. _May 1880._ 1d., in red on half 6d., dark blue-green of Issue 7.