An English late 18th/early 19th century steel double folding pocket corkscrew

细节
An English late 18th/early 19th century steel double folding pocket corkscrew
the faceted spine with two bands of diagonal fluting, the shank with diagonal fluting and grooves, wire helix, slightly bent.
See Plate 11
出版
Watney & Babbidge, Pl. 164