A very similar nautilus cup by the same maker forms part of a group of silver by Clauss in the Hessischeslandes Museum, Kassel. On this cup, the decoration, particularly the waves of the cover, the etched scenes and the vertical straps, are extremely close to the present example but what is perhaps most striking is the similarity between the dragon on the present lot and the dragon on the Kassel cup which, along with St. George, surmounts the cover. Similarly, the elongated figure of a bearded Wodewose which on the present example is depicted kneeling, appears on the Kassel cup standing and holding a spear (see Wenzel Jamnitzer und die Nurnberger Goldschmiedekunst 1500-1700, exhibition catalogue, Nuremberg, 1985, p.289, no.147. A magnificent silver-gilt ostrich egg ewer by the same is in the Morgan collection at the Wadsworth Antheneum, Hartford, Connecticut (see Seling, "Silver-gilt", J. Pierpont Morgan Collector, exhibition catalogue, 1987, p.94.