"A glance back at the rates of postage we have already quoted will show that it was generally necessary to give them in two forms, 'currency' and 'sterling'. The somewhat depreciated Canadian currency required fifteen pence, as will be noted, to equal the shilling sterling--a point brought out on the two stamps issued subsequently for the British Packet rates. Add to this fact that in New England the 'shilling' was a current expression for 16-2/3 cents (10 pence currency), while in New York it represented 12-1/2 cents (7-1/2 pence currency) and we can readily see that in Canadian territory contiguous to these sections the number of pence to a 'shilling' might often be a debatable quantity. As a matter of fact the French Canadians of Lower Canada made general use of the 'shilling' as reckoned at 10 pence (20 cents) in the old currency, while the 'York shilling' was extensively used in Upper Canada. 'Twelve Pence' was without doubt wholly intentional, therefore, as the designation of the stamp, and was happy solution of any ambiguity in its use, even if it has proved a stumbling block to the understanding of latter day collectors." The three values forming this first issue were manufactured by Messrs. Rawdon, Wright, Hatch and Edson, of New York, who are, perhaps, better known to fame as the engravers of the 1847, 5c and 10c stamps for the United States government. All three stamps were printed from plates engraved in _taille douce_ the plates consisting of one hundred impressions arranged in ten horizontal rows of ten each. The manufacturer's imprint--"Rawdon, Wright, Hatch & Edson, New York"--was engraved twice on each of the four sides quite close to the stamps. The imprints were so placed that the bottoms of the letters are always next to the stamps with the consequence that on the printed sheets of stamps the imprints read upwards at the left, downwards at the right, and upside down on the bottom margins.