TO COMMEMORATE THE 5th CONGRESS OF CHAMBERS OF COMMERCE OF THE EMPIRE. MONTREAL AUG.17th to 20th 1903 Rev: BOARD of TRADE BUILDING INAUGURATED AUG. 1903. BIRKS. Bronze 57mm. This medal commemorates the 5th (1903) held in Montreal, Canada. A first for the Empire & Canada, as the first 4 were all held in London.