The 2 Pounder on the left is made by Robert Mitchell and Co., St. Laurent, Quebec, Canada.
The one on the right is made by Royal Ordnance Factory Birtley, Birtley, Newcastle-Upon-Tyne, UK.
That 25 pdr BE-Smoke looks spot on for the one seen in the photos from the Canada "found ordnance" post. Bloome, have you been to Canada recently?
They are still very nice!
Damn! The ones I have here do'nt have that nice papers on them.