There is the remnants of a 2 pounder here in Manitoba. I actually had it in my yard for a couple years after I did some work on it, then it went back to it's owner.
It is just the carriage, the shields, and the basic cradle for the gun, but portions of the recuperator, the barrel, and the breech ring are missing. I stuck a 40mm bofors barrel on to it in the meantime, and it looks the part.
While the dealer who has it isn't actively trying to sell it, everything has a price.