Canada c.1928 Patricia Airways Semi-Official Airmail Unique Artists’ Transition ProofProof pane with black frame and orange airplane, on watermarked wove paper, approximately 156mm x 209mm, with crayon markings by designer A.J. Algate to printers Reliance Engravers, illustrating the proposed transition from the Patricia Airways & Exploration design to Patricia Airways Limited, noting "take out 1926" and "take out Curtiss Lark".
Canada c.1928 Patricia Airways Semi-Official Airmail U.A. Transition Proof
An important and unique transition proof, an unquestionable highlight to an advanced semi-official collection and key component of a gold medal exhibit.