The number of surviving firearms stocked in the manner of the 'Master of the Castles' (so called because of the castles which often feature in the decoration) suggests that they were produced in a large workshop, and as many bear Nuremberg marks on their locks or barrels, and in a single case on the stock as well, it is almost certain that this was in that city.
Other firearms attributed to this unidentified master are to be found in many major collections including the Bargello, Florence (inv. nos. R/64 and M. 235); the Odescalchi Collection, Rome (inv. nos. 11 and 12); the Rothschild Collection at Waddesdon Manor (inv. nos. 104 and 130-132); the Victoria and Albert Museum, London (inv. no. M 1082-1910); the Hermitage, St. Petersburg (inv. nos. 6611 and 6613); and the Collection of the Princes of Liechtenstein, Schlo Vaduz (inv. no. 3822).
The Turkish Janissaries in the inlay, reflecting the endemic wars against the Turks in Eastern Europe, probably draw on the woodcuts of the Nuremberg artist, Jost Amman (1539-1591), or his contemporaries (see C. Blair, The James A. de Rothschild Collection at Waddesdon Manor, Arms, Armour and Base-Metalwork, Fribourg, 1974, pp. 319-322).