What I was able to do with our vintage teardrop, which had no paperwork other than a bill of sale, was I went into NY DMV and told them what I had. Luckily I had a good clerk waiting on me, she said "has this been in your possession for more than one year?" as she's shaking her head yes. Gave me some paperwork, then I had to get a certified
weight slip, got that at the dump, and I was good to go. However that was a 1946 trailer that did not require a
title. The
Uhaul does need a
title and a 17 digit
VIN number. You may have to register it as "home made" and they will then assign you a number. Also look into registering it in Maine for a year, then transfer it to NY. Did the current owner ever have a
title? If so they would have to apply for a replacement for lost title.