I don't have a washer collection, sigh.
But it did occur to me that the washer I'm using now is probably over 20 years old, and it has served me longer than any vintage washer I've used. Prepare to shudder, washer fans, because it's an early 1990s Frigidaire that got dumped in my laundry room at some point. I've used it twice, actually. I was elsewhere on this property, where the Frigidaire originally lived. Then, I moved...and the Frigidaire at some point followed me (was dumped in my current laundry room). My total use is probably about 3 years.
Runner up might be a Kenmore DD which I used for nearly 10 years. But it would have been vintage a very short time (if at all) during the time I used it.
Other vintage machines were less than a year (late 60s Kenmore, unknown vintage BD Whirlpool).