The maker's mark is illustrated in E.Maus et al, Goldschmiedekunst in Ulm, Ulm,1990, No. 5, p.26 and M. Rosenberg (Der Goldschmiede Merkseichen, vol. 3, p. 346, no. 4761) lists a single stacking beaker of similar height by the same maker in the collection of C. Thewalt of Cologne in 1883.
This type of beaker with its distinctive bulge to allow the beakers to be stacked and prevent them from slipping too deeply, became notably popular at the end of the 16th century and would have comprised 6 to 12 pieces.