I remember seeing a very nice 77mm gun in Shelbourne ON.
There were a wide variety of trophies distributed to municipalities following the First War.
Many are documented respecting when and where they were captured.
Back in the 50s, when I was a kid, the city of Kelowna, BC had a similar gun in Rotary Park. It was well maintained and kids used to crawl all over it. By the mid sixties, it disappeared and appeared in front of the old armory, along with a Sherman. I haven't bothered to look to see if it's still there or not.
A lot of these trophies were put on display from both WWI and WWII. All that was needed to get one, was for the city, municipality to ask one of the various Federal gov't agencies responsible for disposal, to have one set up as a display item.
It wasn't uncommon to see everything from big guns to tanks and even aircraft being proudly displayed.
The thing is, these displays needed to be maintained on a regular basis or they quickly became eyesores and the cost of keep them maintained was prohibitive.
I remember seeing a Sherman, that was purchased by a logger, who also had a DUKW, just because. The Sherman sat in a small clearing for appx 20 years, without moving once. It was fully functional when it was parked. The DUKW was run into the ground. Lack of maintenance and a shortage of parts didn't help. I remember both of them being loaded onto Lo Beds and being hauled away for scrap metal.
If this thing wasn't restorable when it was buried, time in the ground hasn't helped.
