To value antique pocket watches, determine who made the watch and the age of the watch. Next, determine what materials make up the watch, such as gold, abalone or gem embellishments. Write down any manufacturing details, such as hinge types or face designs. Compare your findings with listings from a reputable collector's book, a past auction house sold items roster or through an appraiser.
To determine the date of the watch, look over the whole watch, and take stock of the parts. An antique watch without a second hand is likely from before 1800. Look at the watch casing and the inside of the watch for the manufacturer's name. Check the case for a hinged back or threads that secure the back into the bezel. Check for a serial number on the flat part of the inside of the watch, using a magnifying glass.
Check the metal for markings or logos that identify the country and date of the watch. For example, a crown with a rose on a gold watch indicates the watch is from England. Determine the metal content, such as 14 karat gold. Use a collector's book to research any logos or manufacturer's marks to determine dates that the manufacturers produced watches like yours.
Pocket watches made before 1800 are typically more valuable than those made after 1800. Some materials are more valuable than others, such as gold or ivory inlays. Some manufacturers generate a higher value because of the demand for that name's product.