In March, 1878, there was an unexpected shortage in Barbados of the then current One Penny stamp, and the island Post Office authorities supplied the deficiency by means of a provisional: they perforated the large Five Shillings stamp down the centre, surcharging each half "1d." These makeshifts in due course reached England, and orders were duly sent out for a supply for the stamp-market; one dealer's order was actually held back by the Barbados postmaster until the arrival of a further supply of the ordinary One Penny, when a supply of that stamp was sent him. Other dealers and collectors probably fared as badly, and an unused pair, or even a single copy, of this rare stamp supplies an example of unearned increment which would delight a Chancellor of the Exchequer on the look-out for more subjects for taxation. What a nice little nest-egg would a shilling's-worth of those stamps now represent! Of the circular British Guiana stamps of 1850-51 it is hardly fair to speak, as they were issued and became obsolete before even the oldest philatelist ever thought of collecting; but if any far-seeing individual had then invested the modest sum of thirteenpence in the purchase of an unused copy of each of the four values, and had had them "laid down" until the present year of grace, or even until so comparatively far back as 1890, the sum they would realise in open market would not fall far short of £2,500. So, too, with the very rare large oblong type-set stamps of 1856, one of which--the One Cent, black on magenta--is literally unique. The smaller stamps of 1862, printed from ordinary type with a frame of fancy ornaments, and issued on a shortage of One, Two, and Four Cents stamps, were for some considerable time fairly common, being obtainable for a few shillings, or sometimes, if one were fortunate, for pence; now a used set of the commonest variety of each value costs nearly £30. Canada provides a rarity, dating back to 1851. A stamp--and it is a beautiful piece of work--of the apparently peculiar value of Twelve Pence was issued, but for some reason a very small portion of the large supply was sold, the remainder disappearing without a trace, never to be found even to this day: that stamp is now worth two thousand times its original cost. The reason for the value being expressed somewhat quaintly was that, whereas "One Shilling" was a fluctuating amount according to locality, "Twelve Pence" was the same everywhere. It goes without saying that it is the rarities which have appreciated the most, and therefore a list of the stamps which ought to have been secured as an investment is practically a list of the rare and scarce stamps.