A German Friedrich Kummer 1880 Patent 14531 double-action corkscrew with shaped ebonised wood handle and brush, retaining washer missing from bottom of shaft, marked "D.R.Patent" and monogram "FK", slight pitting, pointed centre worm. See Plate

细节
A German Friedrich Kummer 1880 Patent 14531 double-action corkscrew
with shaped ebonised wood handle and brush, retaining washer missing from bottom of shaft, marked "D.R.Patent" and monogram "FK", slight pitting, pointed centre worm.
See Plate 12