IWC hermet-Sport, maybe a military watch?

Hello everybody!

I have at home this little IWC who must date of the end of the 30's or at the early 40's.
She has a caliber 83 which works correctly, its diameter except crown is 30 mm and its "entrecorne" is 16 mm.
On another forum, I learnt that she was called Hermet-Sport.
The dial seems of origin, only hands were unfortunately painted.
Someone told me that it could be a military watch, even if there is nothing on the back. At the beginning of the war, RAF gets watches but manufacturies didn't have time to mark it like others military watches. I don't know if it's true, but I don't believe it a lot.
So I would like to know more informations about my watch, and maybe you can help me.
Sorry for my very bad English,
Thank you!
Stéphane

Hello Stéphane and welcome to the forum! I believe you are correct in your suspicions that your IWC was not a military watch. You can click on the little magnifying glass symbol on the upper right corner of the screen and enter keywords, such as anti-magnet, to search for discussions, articles, etc. related to your watch. There has been a recent thread regarding these anti-magnet watches. Best of luck,

This cal. 83 is definitively not a military watch and it never was.
The true and only military IWC cal. 83 was the IWC W.W.W also called Mark X. All of the Mark X watches were registrated and documented as military watches destined for the British Ministery of Defence (MoD) and they have never been issued to RAF.
It was a watch for ground troops not a pilots watch. They were all delivered when Worl War II had already ended : 1945. More than 66.000 caliber 83 have been built by IWC. Less than 10 % of them (6000) were military W.W.W.watches.
There also is the rare and expensive cal. 83 special watch for pilots, also called Mark IX. Also around this watch is confusion : it was a pilots watch but not a military one.
Of course it is possible that some IWC cal. 83 were used in the army but in this case these are civilian watches, being the property of the soldier, not of the military.
Kind regards,
Adrian,
(alwaysiwc)

This case was used in bigger lots, it was the start of "étanche" cases (improved protection, but not really water proof but above standard.

It could hold the c.83 (12 lig.) or the smaller (10 lig.) center seconds movement c.61.

This type of watch was called Model 628 "Sports watch, extra tight"

regards

Ralph

P.S: the green hands on your watch could be not original....