Proof 12½c, trial color proof in green on wove paper; very fine; rare, it being thought that three exist of which one is in the Canadian Postal Museum | Christie's

Lot 256

256

Proof 12½c, trial color proof in green on wove paper; very fine; rare, it being thought that three exist of which one is in the Canadian Postal Museum

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Proof 12½c, trial color proof in green on wove paper; very fine; rare, it being thought that three exist of which one is in the Canadian Postal Museum