Ship's Decanter, Montrose Pattern by Dorflinger, American Brilliant Cut Glass, Green to Clear, 6.75" X 6.25", Pattern Cut Stopper, Double Notched Handle, Hobstar Base, Private Collection, PA. UPDATED 11-19-20: Added Maker and Pattern Info. UPDATED 11-20-20: Under black light, Woody Auction could not guarantee that this blank is American, which means there is a possibility it could be Val St. Lambert, from the same time period.