I have been given a model 672 sewing machine and wondered if anyone can tell me anything about them. It hasn't been used in at least 15 years. I want to take it to the fellow who does my machines but wondered if it was worth the cost. It worked fine for my friend until she had issues with her eyes. It hasn't had anything done with it for several years but looks in good shape and is very dusty from setting in a bedroom all those years. Thanking you in advance for any info you can give me.