Don't Know Serial Number Off Hand
IIRC MieleUSA told us awhile ago that even with the serial number exact age of this machine cannot be determined from that information alone. Something about how records were kept early on for Miele units sold in the USA. Last one heard the number can give a general range but nothing percise.
Quite honestly one asked maybe once or twice about the age of the unit but never really bothered afterwards. In the grand scale of things it really doesn't matter for either Miele USA's or our purposes. Far as the former is concerned the series has ended their part/product support life so that is that.
What MieleUSA did use these early serial numbers for it seems was more about internal record keeping of repairs and other things done to the unit. I mean they couldn't even say when the unit was sold, information routinely kept track of for modern Miele appliances.