Omega 28'9's are quite rare by theselves, this example however is a super rare hinge-lug variant which I have not seen before... apart from being pictured in the Omega book; A journey through time. The watch pictured in the Omega book on page 530 (see pix) does not have a radium dial and I feel they pictured a 'similar model' because pilots and flying instuments used radium dials because of legibility in the dark. Pls see the Italo Balbo leaflet on page 508 with the Omega cockpit chrono plus the wristwatch. Therefore I presume that this actual watch might have even flown on the famous Balbo expedition; Rome-Chicago-Rome from the 1st of July to the 12th of August 1933! The Omega extract states it was delivered on December 15, 1932 to Italy which fits perfectly. These watches were specially ordered for the Commanders and Pilots of the 24 seaplanes who participated! Now the watch itself is a 33,5mm chrono ref KMG 741 in chrome nickel and has a lovely all original dial without hairlines. Movement is super clean and functions perfectly. It comes with the Omega Extract and is fitted with a nos period style pilot strap. Truly unique piece.