TY - BOOK AU - Abbott,Henry G. TI - Antique watches and how to establish their age: portraits and brief biographical sketches of the celebrated watchmakers of the world, and a directory of over 6,000 names of English, French, German, Dutch, Swiss and American watch and clock makers who were in business prior to the year 1850 : together with numerous halftone illustrations of watches and clocks made by the masters of horology PY - 2014/// CY - [Place of publication not identified] PB - R. D. Porter KW - Clock and watch makers KW - Biography KW - Directories KW - Clocks and watches KW - Collectors and collecting KW - Identification KW - History KW - Not Geographic KW - R.D. Potter KW - directory watch KW - Abbott, Henry G KW - Pocket Watch ER -