Orange Free State 1867 1d, 6d & 1/- Orange Tree Die Proof Trio

1867 DIE PROOFS for the 1d, 6d & 1/- Orange Tree (SG 1, 4 & 8 etc) complete designs in black on glazed card further countersunk into De La Rue printer's cards each dated May 10, 1867. VF, an exceedingly rare early proof trio for this, the iconic first Issue. A key exhibition array of complete representation thus. Ex De La Rue archives.