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James Boss invented the process for mechanical pressurized rolling to sandwich gold layers onto base metal and patented the process in 1859. I.D. Watch Case Co. Illinois Watch Case Co. Imperial Jewelery Co. Ira Goddard Isaac Swope & Co. J. Boss J. Laurent J. Laurent & Co J. Muhr & Bro. J.A. Brown & Co. J.A. Simpson & Bro. J.B. Rosenblatt J.F. Courvoisier J.H. Flyer J.M. Harper J.P. Durfey Shiebler Co. J.R. Wood & Sons Jackay Jewelers, Inc. Jacob Macher Jacot & Courvoisier Jacot 2017-01-29 Vintage Elgin Pocket watch, #18357030, Keystone J Boss, 15 Jewels, Case #C1-2-3-662B, Watch Collectors, Made in USA. chulapoe. From shop chulapoe. 5 out of 5 stars. The item “16s 23j Ball Pocket Watch, Original 14k G. F. J. Boss Case, Original Bow & Crown” is in sale since Sunday, March 22, 2020.

J boss pocket watch case

This comes with an Elgin watch face, glass and inserts but no movement!or hands, this is how I bought it. The case weighs 31.5g. The diameter of the watch movement insert is approximately 38mm which I understand is a size 10. The item “1905 Gold Filled 25Y J. Boss Very Ornate Hunting Case Elgin 0s 7j Pocket Watch” is in sale since Tuesday, August 27, 2019.

Image not available. Mouse over to Zoom- Vintage J Boss 14k Gold Filled Pocket Watch Case VioletMaysHouse.

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J. Boss 11 Jan 2021 It is:Serial #: 1387556 Est Production Year: 1897 Grade:53Model:5Jewels: 15 Size:6sCase:J. Boss 14K 25 Year Case Comments: The watch 9,531,472 features floral decorations and signed Ball Official RR Standard, Keystone, Watchcase, J Boss, 10K Gold Filled. MOVT: The 23-Jewel Lever-Set No. 26 Apr 2020 Elgin J Boss Pocket Watch (Disassembled), Marked 7393824 - Oahu Auctions. Antique Waltham Traveler J. Boss Full Hunter Case Engraved Pocket Watch 1888ANTIQUE WALTHAM TRAVELER J. BOSS FULL HUNTER CASE ENGRAVED Back Lid Marked Keystone Watch Case Co. w/Scales, J. Boss 10K Gold FIlled American Waltham 0 Size, 14K Gold ca1892 Ladies Pocket Watch in Hunting 1 Jun 2018 Open the case's rear cover and look for the markings “10k,” “14k,” or “18k.” This should be easy to see, as it will be impressed into the inside back 1 day ago Paslysti Priklausai subrendęs We have a gold pocket watch.

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For your consideration we have a very nice 16 size railroad pocket watch case. The case is marked Keystone Watch Case J. Boss 10K gold filled. It is for a lever or stem set movement. James Boss was granted a patent on May 3, 1859, for a new process of making gold-filled pocket watch cases from sandwich-type sheets of metal. He sold his patent rights in 1871, and in 18 75 the company that eventually became the Keystone Watch Case Company purchased the Boss patent, factory, and business.

n original cloth liner nice as new pocket watch case. measures 42.4mm id for movement size 14 you determine? this is a new old […] official rr standard pocket watch.
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Vintage Pocket Watch Cases Antique American Railroad Pocket Watches Best Affordable Pocket Watch. For over 30 years, Charles Hubert has provided the world with elegant timepieces that are designed to give you value for money without compromising on the quality. One such item is this hunter case pocket watch that has a polished chrome finish.

In addition, J Boss cases, named after James Boss, the inventor of the modern gold-filled case technology, are always gold-filled.
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If your Keystone case is marked "J. Boss" or "Jas. Boss" then it is a gold-filled case. The symbol of the Crown over the balance, indicates that this a J. Boss case that is 14K filled, and guaranteed for 25 years. There is also a write up in the "A Complete History of Watch and Clock Making in America" by Charles S. Crossman, about the Keystone Watch Case Co.. I.D. Watch Case Co. Illinois Watch Case Co. Imperial Jewelery Co. Ira Goddard Isaac Swope & Co. J. Boss J. Laurent J. Laurent & Co J. Muhr & Bro. J.A. Brown & Co. J.A. Simpson & Bro. J.B. Rosenblatt J.F. Courvoisier J.H. Flyer J.M. Harper J.P. Durfey Shiebler Co. J.R. Wood & Sons Jackay Jewelers, Inc. Jacob Macher Jacot & Courvoisier Jacot EKCreations, Welcome the NAWCC American Pocket Watch message board. James Boss patented the "gold filled" watch case in 1859. Anytime you see a JBoss marked watch case it will be "gold filled" and not 14k solid gold.