The other two covers were both the property of the late John F. Seybold, but the one upon which the stamp appears in finest condition now ornaments the collection of Mr. Charles Lathrop Pack. This is illustrated as No. 91 on Plate VI and bears the postmark of "Hamilton, C. W. NO 23, 1853." The stamp is cancelled with the concentric rings in blue, and an additional handstamp appears in red reading "CANADA--PAID 20 Cts" in two lines. The "20" is made over from "10" by the use of a pen in changing the first figure. In this connection it will be remembered that 6d. currency, equal to 10 cents, was the single rate for 1/2oz. letters between Canada and the United States.[24] [24] See 63 on page 30. The third cover is in all respects a companion piece of the second, bearing the same marks and (probably) the same address originally, but dated from Hamilton on "DE 8, 1853." All three of these covers show the particular use of the 12d. stamp--simply as a multiple of the 3d. and 6d. in currency rates. That it was _not_ issued with any intention of being especially used for the British packet rate must be evident, as we have seen that this was 1s. 4d. currency if prepaid and sent via the United States, or 1s. 1-1/2d. currency if prepaid and sent via Halifax[25]--rates that could not be made up by means of the three stamps first issued. [25] See Secs. 60 and 62 on page 30. On the other hand the stamp was quadruple the domestic rate, double the rate to the United States, and the single rate for the fortnightly mails from Montreal viâ Boston to Newfoundland, Bermuda and the British West Indies.[26] Probably letters in the first category were not common, and, as it happens, all our specimens fall in the second. The third category doubtless did not entail a large correspondence, particularly as the more direct route to the places mentioned, viâ Quebec and Halifax, was at the lesser rate of 7-1/2d.[27] For the above reasons, then, the covers as we find them evidently exemplify the usual use to which the 12d. stamp was put, and explain why more were not used, as surely would have been the case had the stamp been convenient for prepaying the packet rate to England, with which there was a large correspondence. [26] See Sec. 70 on page 31. [27] See Secs. 67 and 68 on page 30. * * * * * Having now described the two main varieties of paper common to the three values of this issue, let us look at some further varieties of the stock used for the 3d. and 6d. values, which, because of their long term of use, were subject to quite a number of printings and therefore gave opportunity for the variation in paper which is a characteristic of this issue. We have already given the statistics of the receipt and issue of 3d. and 6d. stamps for the five years from 1851 to 1856,[28] and find they total 1,600,500 for the 3d. and 150,400 for the 6d. From succeeding reports of the Postmaster General we cull the following:--