Japanese Army WWII Seiko 100 Aircraft Clock

Might anyone be able to give any opinions why my clock has the winding knob at the top of the clock at the 12 o'clock position and not at the 6 o'clock position? Ones I've seen in photos of clocks removed from the cockpit of Japanese WWII aircrafts show that the clock worn by Japanese pilots from a parachute cord around their necks show the knob in the 6 o'clock position. See photos. (My clock is the one on the left).I'm just wondering if maybe during being repaired the instrument was set upside down. Any information will help.

 

Nice clock. Post it on the War relics Forum. Someone should be able to help. Rich A. in Pa.