Was the 1972 theft of the Montreal Museum of Fine Arts the second use of guns in a robbery of an art museum?

Now here's something interesting: Anthony Amore, security director of The Isabella Stewart Gardner Museum and author of Stealing Rembrandts, pointed out that the first use of guns in a robbery of an art museum was committed in May 1972 in Worcester, Massachusetts.

Was the second use of guns in September 1972 in Montreal, Quebec in the robbery of the Museum of Fine Arts?