Help with age and model please

[uptheargyle]

Recent acquisition, looks forties to me, but anyone able to help with date or model? Also crown is loose and need to replace or repair, does it look genuine( not marked), if so will try and keep.
Lastly on a tangent could anyone i.d the bracelet maker, is it Enicar, have tried to trace the logo but nothing yet.

Many thanks,

 

[jbcollier]

Genuine. May be 50s. It has had a rough life. Crown may be a replacement.