20 Dollars

Three distinct signature combinations appear on P#62, reflecting the Bank of Canada's changing senior staff across the note's production run — Gordon Osborne and J.A.C. Osborne sharing the same surname but no family relation, a coincidence that occasionally trips up collectors. The Coyne-Towers pairing came later, with James Coyne having joined the Bank in 1938, which technically pushes some of those issues beyond the nominal 1937 date.

The Gordon/J.A.C. Osborne combination is the scarcest of the three.