The thousand is the devil's face note that time forgot to fix. When the Bank had the face plates modified in 1956, the $1,000 was left alone: Charlton records its modification as coming only years after the rest of the series. A denomination that moved between bank vaults rather than between people did not embarrass anyone at a shop counter, so the devil stayed in the Queen's hair on the biggest note the longest.
It is also the only denomination of the type with a single signature pair. Every devil's face thousand is a Coyne-Towers A/K note, from a printing of 30,000, the smallest regular figure in the series. There was never a Beattie-Coyne devil's face thousand to collect.
Like the 1937 $1,000 before it, this is a market of provenances: survivors tend to be known notes with auction histories, traded between collectors who can name the previous owners.
A four-figure face value, a five-figure printage and a famous variety is a combination that deserves paperwork at every step. This is not a note to buy from a photograph.
Mintage figures: United States Mint (Annual Report of the Director of the Mint), Royal Canadian Mint records, and — for the 1935 banknote issue — Bank of Canada printage records as published in the Charlton Standard Catalogue of Canadian Government Paper Money, cross-checked across independent published references. Specifications: United States Mint coin specifications.