I remember when I was just starting out on the collecting journey in the 1970's the show I liked the most was the Lower Canada Arms Collectors shows held at the armouries of the Royal Montreal Regiment.
Ben Weider (the Fitness/Bodybuilding guru) lived in Montreal. He was obsessed with anything Napoleon related and often had parts of his Napoleonic collection on display. I believe he owned the largest private collection of Napoleonic items in the world. He had Napoleons death mask, all sorts of his correspondence, despatches from Marshall Soult,, Prince Jerome's sword which he broke over the barrel of a cannon in frustration at Waterloo, etc, etc,
I suppose it was broken up after his death. The collection made quite an impression on a history fixated high school kid at the time.