What a beautiful job of restoring that Ruby. I know mine is in bad shape but I may be able to gently clean the decals on the upper parts and repaint the bed. The cabinet will need some work, there are strip underneath of 3/16th wood that has come off.
When I googled New Home Ruby Sewing Machine, the www.millmuseum.org came up. They have several plus a whole catalog to look at.
I hope to teach my GD to sew on the Ruby. She is an artist so maybe can get her away from Anime for awhile. Wish me luck.