Early Longines Watch - Mysterious Invoice

Thanks for info. Momevemt number is 83792, and there are some letters on a case, I think "cuivre"...

Thanks for sharing your watch! The dial is very nice with those thick Roman numerals and the delicate minute scale. I believe that the case is missing its front cover. At IX o'clock there is part of a hinge and at III o'clock there is a catch that would secure the cover. I notice a couple of other minor flaws such as a short minute hand (maybe the tip was broken) and replaced parts on the movement. Still, I think that the value could be around what @Perdurabo mentioned.

Thanks a lot!