My first post to this thread. But I have lurked around. I have this pocket watch I need assistance with determine any information or insights will be valuable. Vtg 101 yrs old.
2.5in L x 1.75in W x 8mm D
Outside case back: (blank)
Inside case back: Keystone Watch Case 1506557 J. Boss Extra
Movement: E. Howard Watch Co. Boston USA 1241446 17 Jewels 3 Pos Pat'd '18
Gold filled, enameled face. Windup movement. Antique photo attached to inside caseback. Circa 1912 to 1914
Howards were high end watch movements that were often cased in solid gold cases, but were not factory cased. The person buying the watch would choose a case at time of purchase and it and the Howard movement would be married by the retailer. Sharp close-up pictures of your watch would be appreciated.
Howard movement serial number 1057982 can be seen to be a 12-size, Series 7, 17-jewel, open face movement. It should be marked "Pat'd '12" If so, it was made some time between that date and 1930 when the company ceased production. You can find serial number vs. date tables that will get you closer, but I wouldn't put too much faith in them. If I had to guess, I'd put it someplace in the early 1920s, but I could be way off. Case is Gold Filled
1859 - J. Boss received a patent for "spinning up" cases made of "gold-filled" type material. That is, material made of a sheet of composition metal (usually brass) sandwiched between two thin sheets of gold. Boss formed cases by rolling sheet metal as opposed to the traditional method involving soldering and cutting. Rolling increased the molecule density of the metal. His patent, No. 23,820 of May 3, 1859, revolutionized the watch case industry by enabling the production of not only less expensive, but considerably stronger cases. ... Unlike gold washed cases, which were made using electroplating, cases produced by means of rolling had much harder gold surfaces and were thus less apt to wear.
Edited by PointDexter2014 - 9/4/13 at 5:17pm