I found one online of someone who bought one that looks very very close to yours! I did a google images search for crank sewing machine and found only one that looked very very close to yours but the case was a dead ringer so I'm going to guess they are sisters!
http://www.biosurvey.ou.edu/bergey/p...gmachines.html
She says hers is an Atlas.
You might be able to contact that person to confirm it. :)

What a gorgeous machine and case!!! You must be delighted!!! :D
Hope you find out what it is.

Neat. Not sure the name though.