Imperforate proof pane showing trial colour of FRAME ONLY printed in black on white-surfaced card, ungummed; a striking and rare pane, VF (Unitrade CL23P variety; unlisted in black, or on white paper) (Image)

Estimate 2000 $

A similar lot (Image)

Estimate 2000 $

A similar lot (Image)

Estimate 2000 $

A similar lot (Image)

Estimate 2000 $

Series "1" imperforate pane on yellow gummed paper, with green frame & inscriptions at sides - no airplane. Printing & paper colour are similar to the issued stamp. Marginal gum bend at lower left and vertical crease in right margin, otherwise VF NH, a very rarely seen pane. (Unitrade CL23P; cat. $3,500) (Image)

Estimate 1500 $

Patricia Airways, Style Three A similar lot as above, Rouletted; marginal bend at left and light gum disturbance mostly confined to edge of pane, VF OG (Image)

Estimate 1500 $