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.

 

Maybe it is a Seikosha "Oversized Aviator’s Watch" not an aircraft clock

Seikosha military clocks and watches – BuzzuFy.com

 

I have a question. My watch or clock has the serial number plate #3317" on the side and has a brass winding unit. IF the watch was an oversized civilian aviator's watch, would these features be part of it? See photo. I would appreciate your opinion.

 

Beautiful thread, fascinating timepieces. The beg a question, the hour numerals are western as is the serial number. I noticed that shipboard semaphores are in Japanse. , my nomenclature may be wrong, the repeaters that send messages from the bridge to the engine. Also, 12 hours, did not the Japanese use 24 hour time in their military? For that matter, I am surprised it was used by civilians as well.

Gaines