This is an antique Longines Weems. I purchased it 35 years ago from an antique watch shop in Shimokitazawa. I don't know the exact year of manufacture (I think it's from around the 1950s). It was overhauled about 10 years ago and is working properly (it gains or loses about 2-3 minutes per day). The dial is clean, so I think it's been redone, not original. The bezel rotates properly. The strap has been replaced with a nylon one. A message from the time is engraved on the back cover (it seems it was a gift).