Art Déco cocktail shaker - Carl Deffner

A nicely-done Art Déco-cocktail shaker - made by Carl Deffner / Esslingen - around 1920. Hand-hammered copper (the copper version is rare - it is much easier to get them silver-plated!). Marked with Carl Deffner sign plus form number 35. Height 19 cm/ 7.5'. Good undamaged condition, with minimal traces of use/ fine even ageing patina and not polished. Rare model.