IWC SHAFFHAUSEN: silver pocket watch - Swiss 1930

guilloché decorated case, white dial with Arabic numerals, a pair black steel hands plus a sub seconds hand. The watch is stem wound / pin set and the movement is a Cal. 52, 19''' H 6. Movement nr. 825399, case nr. 924325. Stamped with Swiss hallmarks for Shaffhausen. June 1930.
Diameter 52 mm. Weight 64.5 g.
Item condition grading: **** good.
The watch seems to be in working order but may need an overhaul.