If it is a question of getting the Dominion Express Plaque from your location to Ottawa I would gladly drive down and deliver it to the CWM, the offer is open and unconditional. It is like it (and all other "orphaned" plaques like your plaque) is meant to be on display alongside the T.Eaton Memorial plaque, it just looks right on so many levels.
http://www.warmuseum.ca/collections/artifact/1369276/