Maybe that is why the owner can't find the s/no on the machine?
Rob Hill
....Also bear in mind that Mellotrons (pardon,Novatrons) were simultaneously available
in the UK for approximately £800-850 (US$ 1700-2000 ). Bill imported these,rebadged
them as Mellotrons, "reconditioned" them, and sold them for 2X original cost. Hmmm.....
My original documents of the time bear witness to this factoid....