The serial number on the movement is 4C139788. Which according to the Pocket Watch Database, dates this piece to 1970. These "4C" serial number 4992B watches were the LAST 1000 watches produced by Hamilton! The watch Winds, Sets & is Currently Running. It has not been timed for accuracy.
The case is a Dueber Base Metal case. There is some plate wear to the back of the case. The item "1970 Hamilton 4992B 16s 22j MILITARY Pocket Watch 4C LAST HAMILTONS Runs" is in sale since Wednesday, April 3, 2019. This item is in the category "Jewelry & Watches\Watches, Parts & Accessories\Pocket Watches\Antique".
The seller is "jastermereel" and is located in Bridgewater, Virginia. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, Sweden, South Korea, Indonesia, Taiwan, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Chile, Colombia, Costa rica, Panama, Trinidad and tobago, Guatemala, Honduras, Jamaica, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Montserrat, Turks and caicos islands, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Pakistan, Paraguay, Reunion, Uruguay.