Which database did you use? The official FAA registry says it is invalid.
However, I did find it at airframes.org for a Grumman AA-1B, albeit without an address.
Sorry I’ve been away from the computer all afternoon, but the database I use is Landings.com and it did show a Grumman AA-1B registered as N1553R, although I have sometimes found them to be inaccurate or out of date. I’m surprised there are not more “double entendre” registrations since an owner can evidently get almost any combination of letters and numbers up to 5 after the initial compulsory N.