Hi Sewstrait
Congratulations on an exciting purchase.
If you join the Necchi Yahoo group, you'll get all the info you're after there
Personally I'm not familiar with Necchi's by a number, most people seem to refer to them by their model name.
Eg. I have a Supernova Automatica... Other models are the Necchi BU, Supernova Ultra, Lydia, Lycia, Mirella etc.
Cheers,
Amelia