Nobody has any. They never circulated; banks used them for transactions with each other and with the finance department, but mostly they held them, along with gold, for their legally required reserves. After the Bank of Canada began business, there was no further need for bank legals as reserves were held by the central bank.
Only once, as far as I know, did a bank legal escape into circulation, and that was entirely accidental. A $1000 bank legal ended up among property tax funds collected in Vancouver, in 1915. When the mistake was discovered, T. C. Boville graciously consented to take it back, although it had no legal value outside of banks. The story is written up in the Sept. 1995 CPMS Newsletter, page 74.
What collectors DO have is proofs and specimens, released when bank note company archives were sold in the 1990's.