I believe this to be a 1956 Model. This is a model 15 stainless steel. Stainless will last forever, no brassing or wearing through as with the plated versions.
All the desired marks are present, " Railway Special" on the dial, full Montgomery dial. Comes with the braided chain and Hamilton 992 B pouch. If you listen to Norman Blake, you will recognize the description. The usual picture of the inside works are normally taken by removing the back. This one was a special salesman's example and the back was made of glass so the internal workings could be easliy seen.I love this feature, you can just look at it and watch it working, very relaxing. The watch is adjusted to six positions for accuracy and meets all the railroad's accuracy recommendations. This watch is recently tuned up and runs perfectly and accurately. The dial is clean and without cracks.
In short, a no nonsense, no problem watch you can trust for your lifetime and your childrens. The item "Rare Hamilton 992 B Railroad Pocket Watch Clear Back Montgomery Dial Lever Set" is in sale since Sunday, August 19, 2018. This item is in the category "Jewelry & Watches\Watches, Parts & Accessories\Pocket Watches\Antique". The seller is "midstreamlmf" and is located in Dallas, Texas. 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, China, Sweden, South Korea, Indonesia, Taiwan, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Israel, Mexico, New Zealand, Singapore, 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, Ecuador, 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.