A wider angle picture would help identify your fridge
. However, fixing that is possible. Some sanding and new paint
. But if the gasket is also shot, maybe look into a replacement. The most common fridge that would fit is an RM211.
This looks like an RM211, but with controls on the top front. The price is right:
If I was in Ontario, I would be driving to pick that up, just to see what it is. There are likely some parts worth salvaging from it, like the heater.
I have a few RM211's that I keep for spares. They were common on pop top tent trailers, Bolers and Trilliums. In fact one of them I got from someone who replaced it with a bar fridge. The RM211 worked perfictly.
Another option is an RM24, which is what I think you have.