In the phrase of some other forum members "you might have something here!!" According to information on a well-respected and very comprehensive whisky site, your bottle(s) look identical to a bottling of the 12-year-old Glenlivet from the 1930's (comparing labels, lettering, etc.) which they currently value at around $3,400/bottle. (Full disclosure, they are a retailer; I'm not sure whether it's within forum rules to name them directly.) Also, you've got the original packaging (cartons) and although there seems to be some water(?) damage the bottle labels have probably been protected by the tissue paper wrapping shown in your pictures. The presence of original cartons would tend to add value. So if your bottles are genuine you should definitely keep them.
Now you might want to do some more research to determine provenance, and if possible have an expert examine them to be 100% sure. The importers' name and address in Mount Vernon, NY would be a lead to follow up if your detective skills are good (they're most likely long-defunct but may be traceable through a Google search). Do you have any educated guess as to how long they might have been in storage?
That's my two cent's worth. Any experts want to weigh in?