Miter box model 881.36303 and kromedge 26" satin cut miter saw

by Laura & Neil
(Denver, NC, USA)

Belonged to my father-in-law. We used it to cut crown moulding in our den so it does work ok. Tried to give it to someone who was making renovations in our home and he said it was worth too much to give away. I didn't know it had any value...is it really vintage and what is it worth?