In recent Canadian acquisition, ended up with 3 more Scott 17. Trying to match up shades with the Unitrade catalogue.

From left to right - I have
red lilac - 17
violet - 17a
purplish - 17e
brown - 17b
brown (slight purplish tint to my eyes) - 17b shade
deep brown - 17b
The one at the end is odd - trimmed at some point, is deep brown. Identified in the source collection as a 16, but that seems unlikely. Cannot really tell the perfs given how little is left, perhaps it was trimmed to conceal the fact that is perf 12 (and thus Scott 17) and not 11.75? Theories welcome!
~Greg