This decanter belongs to the last important series of glass-ware which Copier designed in 1962-1963. The so-called 'A.D. Collection' comprises, decanters, goblets, tumblers, candlesticks, ashtrays, bowls, vases, a knifrest and an abstract object. The objects are built-up And from spheres, cylinders and cubes. The collection was first shown at the retrospective exhibition in 1963 in the museum Boymans-van Beuningen in Rotterdam

cf. Reino Liefkes, Copier, Glasontwerper/Glaskunstenaar, 1989, p. 68, no. 84 for the decanter and stopper and other parts of the collection
cf. G. Beard, International Modern Glass, London, 1976, p. 102, no. 129, for a similar decanter in the Corning Museum of Glass