That's a very heart-warming story Bob. I love hearing about the unusual finds we come across. That looks to be a beautiful gun and I'm sure it'll shine more when you get it out of NJ detention and throw a coat of Ren wax on it. I got my 5"er, a 1967 year model, from a job super that didn't know what he had for $600 including the original box. It's one of the few guns I own that I've never shot because of its condition.
Be sure and post pics when you get it in hand. Congrats.