This is a very good example of a heavy solid silver centre seconds Pocket Watch by H Kauffman of Manchester that is signed on the Key wound (with the Key supplied) chain driven Fusee Movement and is serial numbered 41891, it winds well, runs strongly and keeps time, there is a stop/start slider (albeit stiff) at II, this feature was called a “Doctors” Watch
The white Face that has black Roman Numerals and gold colour hands, with a centre sweep Seconds hand. Around the outer edge of the Face is various calibrations 
The very heavy solid silver Case, is in excellent condition, no dents, all catches and hinges operating correctly, it measures 58mm approx. diameter, excluding the Loop and is prominently silver hallmarked for Chester 1887 
 A classic antique Timepiece approaching 150 years old in full working order