Had this for some time, just now investigating. Chelsea 4" porcelain dial, time only, brass case with screw on bezel. Serial # on movement is 69301 which puts it between 1910 and 1914. Dial is labeled "The Hoffecker Co. BOSTON." Rate adjustment on dial is a pointer at the 2 o'clock position. Complete and running. If anyone knows stuff like model number, jewelling, etc. I'd be most appreciative. Any ideas on repairing the dial? This could get expensive... Many thanks.