1880 PATENT DATE, SEEN IN 1908 PRODUCT CATALOG OF NEWMAN'S
Dial says New York Watchman's Clock And Eight day Dustproof Timekeeper
THERE IS A GOOD DESCRIPTION OF THIS CLOCK IN PHILIP HASELTON'S BOOK.
THE WATCHMAN'S CLOCK IN AMERICA
JUST ACQUIRED, NOT SURE OF DATE, THE INSTRUCTION LABEL LISTS
A. NEWMAN , WILLIAMSBURG , N.Y
Williamsburg was annexed to Brooklyn in the mid 1890's and just as the Williamsburg Bridge became the Brooklyn Bridge, the name Williamsburg disappeared.
Thus I think circa 1895
14 INCH SQUARE CASE WITH A 12 INCH DIAL