If you call Viking/Pfaff at 1-800-446-2333 and give them the serial #, they will give you the date. I called before for my White FR, and just this morning for my sister's FR. I was amazed at how quickly they retrieved the dates!
It's a really beautiful machine and I love the twigs cabinet!
more White info:
http://www.treadleon.net/whitesm/whites.html