A Charles Chinnocks 1862 type corkscrew

细节
A Charles Chinnocks 1862 type corkscrew
with shaped wood handle and rotating brass barrel with fluted top and two oval apertures, unmarked, pointed centre worm; and a McBrides 1888 Patent champagne screw marked Dry Monopole Patent No. 7471, wire helix.
See Plate 15 (2)