MATCHED PAIR OF DURAND ART GLASS VASES, SIGNED

I am selling these vases out of my father-in-law's collection. He passed away several years ago and these and many others have been boxed up for storage. I don't know very much about art glass, but this pair of vases look valuable and are both signed. The pic of the signature is hard to take, but it is in block printed form and says "DURAND" from what I have been told they are acid etched, but again I really do not know. They are identical in size and shape and are 5 1/2 in tall, 4 in wide, and 2 1/8 wide at the neck. The glass is very thin and delicate. They will be double boxed for shipment to the high bidder and insured according to the buyers instructions. I am starting them out at a low starting price with no reserve.
thanks for looking and good luck. NOTE, These vases art in pristine condition.