Vintage Ball 999B Official RR Standard 16s 21 J GF Pocket Watch. The white enamel dial with black numbers, sub seconds at 6, outer minutes in black with matching steel hands is signed Ball offical standard Cleveland. The manual wind 21 jewel 16s 3/4 plate movement is working well and running strong, fully signed Ball watch co 21 jewels, gains 12 sec a day. The large 10k gold filled 51.2mm case with screw back is in nice original condition, the case back case is signed Ball official standard keystone watch case j boss 10K gold filled. Dont miss this Ball pocket watch for your collection.