Singer 15 Clone

This machine was given to me for birthday/Christmas present I think in 1955, it was the year I was in 7th grade taking home economics.  It's badged Ambassador but the book that came with it was for a Modern machine.  All bits seemed the same and it worked very well for many years.  Was set aside for maybe twenty years.  Didn't realize it was so dirty!!!!

This is the front of the machine, didn't take a back picture.  Everything is original to the machine but I might have purchased a new motor and foot petal, not sure on that.
If you can give any info on the machine I would greatly appreciate it.  Thanks!!!!

New Purchase

This is my new purchase, can you tell me what model she is???  Thought it was a 66 but the stitch length is not the same as my red eye. 

These are the decals on the bed of the machine, there is some red in there and in the flowers

Faceplate and the tensioner is in a different place from the red eye also.

I'm sorry but I forgot to turn these first and the blog won't let me delete them and get the correct ones.  But you can see the bobbin winder and the stitch length indicator.  There are no numbers by the stitch length screw. 
I want to buy some parts for this machine but until I know what it is I can't get them.  It was electric but I want to convert it to a hand crank.  Thanks for your help!!!!

Graduation Quilt Ideas

Please let me know if these fabric will work for your quilt.  The gray and cream would be the constant with the green and gold being scrappy.