Concerning the subject of this thread...
Of the 17 heavy tree varieties, only Dr. Courteau varieties 46 and 47 are dated 1842, thus can readily be eliminated from consideration.
Concerning this grouping, Dr. Courteau is concerned with the letter M in MONTREAL. He calls this either 'open' or 'closed.' "In the open M
variety, the angle formed by the central part of the letter comes down online with both feet, but points towards the left one; whereas in the
closed M variety, the angle does not come so low and points towards the right foot."
Of this grouping, the open M are found on varieties 47, 48, 49, 50, 51, 52, 54, 55, 56, 58, 59, 60.
Of this grouping, the closed M are found on varieties 46, 53, 57, 63.
Varieties 61 and 62 have a different font for the letter F which he calls "old style.'
We find the token in question to be of the open M grouping ergo, 48, 49. 50, 51, 52, 54, 55, 56, 58, 59, 60.
Dr. Courteau also indicates whether the nose of the beaver is long or short. The short is more cat-like,
whereas the long nose has a rat-like snout.
The short nose is found on varieties 46, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63.
The long nose is found on varieties 47, 48, 49, 50, 51, 52, 53.
We find the token in question to be of the short nose variety, ergo 54, 55, 56, 47, 58, 59, 60, 61, 62, 63.
Eliminating the "closed M" grouping, we narrow the search to varieties 54, 55, 56, 57, 58, 59, 60.
Among other things, Dr. Courteau is concerned with the leaf-less stems of the shamrock and the points of the right ribbon.
Variety 54: "Shamrock upper left leafless stem is short, the lower right one curves downward; points of right ribbon are short."
Variety 55: "Long points at right ribbon with its left bent abruptly."
Variety 56: The same as 55.
Variety 57: The same as 55.
Variety 58: "points of right ribbon are short."
Variety 59: Stem on thistle stem, Defect at top of numeral 1."
Variety 60: "points of the right ribbon are short."
We can eliminate varieties 55, 56, 57 (Ling right ribbon) and 59 (no defect to numeral 1).
Ergo: 54, 58, 60, and of these only variety 54 has the right leafless stem curving downward.
Thus Courteau variety 54 having a rarity factor of 2.
doug.