Ball - 21 j Hamilton 999 pocket watch Yellow gold filled railroad watch made for Ball by Hamilton, 16 size, serial number B631071, circa late 1920s. Clean porcelain dial with black Arabic numerals, minute markers, subsidiary constant seconds register signed Trademark Official RR Standard Ball Watch Co. Cleveland. Ball model screw back case with stirrup bow, brassing around the back outer edge. Fully signed 21 jewel movement with 5 adjustments and sapphire pallets, probably a Hamilton 999 movement in very good condition.
 

21 jewel Swiss Ball open face pocket watch Yellow gold filled 16 size open face pocket watch made for Ball by Record of Switzerland. Porcelain Montgomery dial with subsidiary constant seconds register, marked Ball Official RR Standard Cleveland with a small chip at the lever under the bezel. Ball Official RR Standard stirrup bow screw back case in excellent condition. 21 jewel movement adjusted for heat, cold, isochronism and 6 positions marked The Ball Company, 435B movement manufactured by the Record Watch Company.