Is there any maker marks of any kind? If not then one would have only visuals to go by for maker, and value. Those are some stunning Chandeliers for sure and just the look would bring lots of value. They look to be 50's or 60's in design, There was quite the grape craze in those years, I remember the Glass grapes scattered about the homes of many friend and family, even those crazing cheap hanging lighted grapes
, My Aunt and Uncle had. Those was the days. These are the most unique grape lights I seen to date.
. If I was to take a stab at the value I would start at $300.00 to $500.00 for them but if you can get the maker pegged down, it would only go up.