Okay, took me a while to get to it, but I grabbed some photos of it the other night.
Here's what I've found about the compressor so far.
Manufacturer is Webster Air Equipment Limited, model 24 - 2. The motor is made by Baldor Industrial Motor, and the electrical box on it is a Square D.
I took the tank drain plug out, and barely a drop of oil, basically whatever stuck to the drain plug. Belt is in good condition.
The quick connect coming out of the tank is leaky, so I will need to replace it.
It definitely can build pressure, but with the leak, I didn't keep it running, so don't know if it will reach full pressure without issue. There's nothing to suggest it won't, though.
Was that drain for the oil or the air tank? Nice it's made in London Ontario. Will probably run forever if its maintained properly.