An early American bell cap corkscrew by Walker. This example with advertising message for ‘Schlitz’ beer on the bell. As is noted in ’Mechanical Corkscrews, Their Evolution, actions and patents by Ferd. Peters on page 75, Figure 188 this design was “Perhaps the precursor of Walkers 1893 patent”. Perfect centre cut worm. Circa 1890. (Provenance: Frank Ellis Collection 2014)