DUNHILL: a silver and enamelled 'unique pattern sports watch' lighter

maker's mark for Alfred Dunhill, with import marks for London 1928

maker's mark for Alfred Dunhill, with import marks for London 1928
Rectangular form with rounded ends, enamelled in black, the fold down front section revealing the watch case, the watch stamped 2387 thrice, also stamped 'Patent Applied For', the matted dial with painted Arabic numerals and signed 'DUNHILL SWISS', underside of base stamped MADE IN SWITZERLAND, ENGLISH PATENT 143752, U.S. PATENT 1022140, OTHER PATENTS PENDING,
4.8cm x 4.1cm.