Web site: https://www.butlersantiques.com/
This is a modern decanter by Orrefors which is clearly signed on the underside. Although no longer called a ship's decanter by the makers, it clearly derives from an early 19th century model. It was designed by Nils Landberg for the company in 1972.
Apart from minor scratching on the underside, which is almost invisible when seen from above, the decanter is in almost new condition, with no chips, cracks or cloudiness.
Since buying this decanter, I have found another - so we are selling them as a pair. The price given is for the pair (although we would sell them individually for £265 each)
Dimensions: 11.4", 29 cm. high incl. stopper