'Q7928' on reverse and impellor, anchor motif stamped on fins and 'T.W. Excelsior' with towing cord and sinker, in pine case with instruction sheet " /> A Walker's Patent "Excelsior" III taffrail log (Mark III), the brass cased log with white enamel dial, stamped <I>'Q7928'</I> on reverse and impellor, anchor motif stamped on fins and <I>'T.W. Excelsior'</I> with towing cord and sinker, in pine case with instruction sheet | Christie's