Welcome to KF
Edge was a mark used by US importer Gutmann Cutlery from the 1950s to, at least, the 1980s.
Collector value is, probably, low...$40-$50 at a guess. They were made in huge numbers.
The design of yours is fairly "generic" for the time...many German companies produced knives with similar construction.
I have no idea who made the Edge knives, though.
There were various blade shapes.
BTW, despite the low value, they were, mostly, good user knives.
A thing worth doing should be left to someone who can do it well.