Here is some information I had found and it had serial numbers with it.
http://www.treadleon.net/whitesm/whites.html. Also
http://www.ismacs.net/newhome/manufacture_dates.html Here you can download manuals
http://www.ismacs.net/newhome/new-ho...e-manuals.html On the ismacs website, you can look up New Home and get at least some idea how old it is. Mary