Doxa Antimagnetique caliber information

[bograd]

I have this Doxa from 1949-1952 period.
Can anybody tell me what movement it is?
Under the balance is marked 11 1/2 14

http://i306.photobucket.com/albums/nn261/bograd/Doxa%20Antimagnetique/IMG_3890.jpg

http://i306.photobucket.com/albums/nn261/bograd/Doxa%20Antimagnetique/IMG_3887.jpg