Canada 1852-57, handmade wove paper, 6d slate-violet (slate grey), Prince Albert, SG9.
Good to large margins, mint example with re-distributed gum; horizontal crease and very small thin. Good impression with reasonable colour.
A very collectable example of this exceptionally rare stamp and in better condition than most surviving examples.
Accompanied with a Vincent Graves Green Certificate of Authenticity (2018). Scott #5.
The SG catalogue value is £45,000.