1923, black, gold and bronze surcharges on Imperial Insurance stamps, complete set of five, 10k has perforation 13 1/2, all others with perforation 12 1/2, full OG, NH, VF

100.00

1923, inverted black surcharge 3k on Imperial Insurance stamp of 3r red brown on green network, perforation 13 1/2, left sheet margin block of four, full OG, NH, VF

400.00