Just wondering what it might be worth (if the conditions were right).

Written on the note:

The Dominion of Canada
will pay on demand

25 cents
Department of Finance Canada

Ottawa, July 2nd 1923.
A-1

On the front is a black/white graphic of someone with a helmet holding a
spear (similar to king neptune's spear)

Front of note is black & white, with a bit of brown. Serial number is red.
On the back of the note, there is a green graphic that says 25 cents.