Probably 10 years old
We had the Bendix front loader, but my mom would not let me touch it.  I don't think I ever did, even though we had it until the mid-sixties.  ( I think it was a 1944 model).  I asked my dad if I could have a washer.  Milt's appliances on Pachecho Blvd. in Martinez, CA where I grew up had some for $15.00, not a tremendous amount of money even then.  He didn't realize that I wanted an automatic washer and got me a wringer, but afraid I would hurt myself, removed the winger.  I did play with it, but was disappointed.  It was an Apex with a big spiral agitator (Alunimum ?).  But it was so nice of him to buy it for me, I didn't want to hurt his feelings, so I didn't tell him.
Later at college I found a Maytag AMP in the yard of my apartment building and brought it in. I used it that year and really loved it.  I had to move and just couldn't move it, there was no hook-up at my new apartment.  I don't know why that stopped me, because I had made one for it in the other apartment.
From the next apartment (in San Francisco) on I always had a used washer, and several different models, Kenmore and Ge.  That wasn't really collecting, but I enjoyed them beyond just having them to wash for me.  I also had a portable top-loading dishwasher, I think it was a Kenmore.  I took the pump apart several times trying to seal a leak, I think it was just a loose clamp on a hose.
Much later here in Sacramento I found a Whirlpool washer in the street and brought it home.  It barely worked and I eventually set it back on the street.  Then I got a GE filter flo, which I thought was old, but found out it was a 1994, not old enough for the Imperial section.  Later I found my AMP, just like the one I had in college.  That is my treasure, because it brings back memories of college and our family friend who also had one when I was young.
Since then I have had several 1-18's and still have one.
Martin