This is a Canadian Maple Leaf Flag which was flown atop the Peace Tower of the Parliament Buildings in Ottawa.
There is currently there is a 52 year waiting list for these flags.
This particular flag was signed by the late John Ross Matheson. It is the only one he ever signed that flew on the Peace Tower.
The sale of this flag is to continue building the Canadian Flag Education Centre.
Please see pictures for this amazing piece of Canadiana history!