I have a domestic sewing machine FR7501760 would like to know the year it was buildt and anything about it was my grandmother's on machine Cleveland , Ohio

Here are some sites that may help you get more information

Miss Sews-it-all: How Much Is My Old Sewing Machine Worth? (http://sewsitall.blogspot.com/2013/08/how-much-is-my-old-sewing-machine-worth.html)

ISMACS Vintage Sewing Machine Booklist (http://ismacs.net/booklist/index.html)

I could find nothing using the model(?) number you gave.