I wouldn't leave them sitting outside either.
This is quite similar to the first washer and dryer I remember my parents having. Even down to the washer being older than the dryer.
The dryer might be identical, or almost identical. It's been so long since I've seen them, I'm not sure.
The washer: I swear Mom's control panel was more to the right side. The panel to the left was white plastic, and lit up. And hers had a chrome cap on the black Surgilator agitator.
Seeing these two together definitely brings back memories though.