Given the shape of the hood, although hard to make out, I'd say that's an old, old machine. Late 80's, early 90's Murray or some such. I note the manual deck engage arm.
Not bad for a 20 year "cheapie" lawn tractor. Fact is that while the creature comforts weren't there, and those older Craftsman/Murray type machines weren't built all that great, it just goes to show that many of them lasted a good long time and took an amazing amount of abuse. Their owners didn't have a million bucks in them either.