Later Veedol cans from 50s/60s that are not hugely desirable because of look/age. $50-$65 per can is the going rate of one of these 5qts in good condition, but occasionally can see less or more than that range. Box is not going to factor into value unless it has some type of advertising and even then it would not add much. I don’t find 5 qts to add any value if full, so I would recommend emptying if they are full.
Looking for rare ephemera - maps, ads, smalls, etc - and the occasional can.