Four banknotes of the Canadian dollar have been commemorative issues. The first was issued in 1935 to the silver jubilee of the accession of George V to the throne of the United Kingdom, the only $25 banknote ever issued by the Bank of Canada. The second commemorative banknote was the Centennial $1 banknote issued in January 1967 to commemorate the Canadian Centennial. The third was issued in September 2015 to commemorate Elizabeth II becoming the longest-reigning monarch of the United Kingdom and Canada. In 2017, the Bank of Canada released a commemorative $10 banknote for Canada's sesquicentennial, which was available by Canada Day.