2 lugs on the back, the lower lug is larger as typical for this badge.
55 mm high
The Irish Fusiliers of Canada (Vancouver Regiment) perpetuated the World War I active service of the 29th (Vancouver) Battalion, CEF plus the indirect service of the 121st (Western Irish) Battalion, CEF and the 158th (Duke of Connaught's Own) Battalion, CEF. Served as 1913 - 11th Regiment, Irish Fusiliers of Canada; 1920 - The Irish Fusiliers of Canada; 1936 - The Irish Fusiliers of Canada (Vancouver Regiment); 1946 - 65th Light Anti-Aircraft Regiment (Irish Fusiliers); 1958 - The Irish Fusiliers of Canada (Vancouver Regiment); 1965 - disbanded.