Lot 5, Canada ten pence Cartier trial colour plate proof in black with SPECIMEN overprint, sold for C$789 August 3, 2021July 27, 2021 by Sparks Auctions Lot 5 Canada #7TCi 10d Cartier Trial Colour Plate Proof in black with vertical SPECIMEN overprint, on card-mounted India paper, very fine and rarely offered. Unitrade $1,000, sold for C$675.00 plus 17% buyer’s premium.