Just wondering if anybody has any idea how much these are worth?

All I know about them is that they were made as Rolls & Bentley decanters, to be included in top spec cars made in the 70's and 80's.

The glass is 32% pure lead, superb quality crystal, with ground stoppers. The tops are pure silver.

Unfortunately not as they were made as samples, my grandfather "aquired" them as he was director of web Corbett, which was bought by royal doultan.

I do however have a piece of paper which states them as a commision from RR, and there is a receipt paid for by "Rolls Royce Coachbuilders"