细节
A folding guinea balance
by A. Wilkinson, Ormskirk, with fold-over weight and sliding weight divided 0-12, in hinged mahogany case with instruction labels -- 5¼13cm.)wide closed, circa 1790
by A. Wilkinson, Ormskirk, with fold-over weight and sliding weight divided 0-12, in hinged mahogany case with instruction labels -- 5¼13cm.)wide closed, circa 1790