This is my family's watch, I received it from my father. He said that when he was young he ordered longines to make a watch specifically for him to use. The year of production is unknown, but perhaps from 1968 to 1972. I tried searching but I didn't find the second one like that, from the internal machine to its design. I'm not familiar with watches, I'm here to see if anyone knows about this watch. I'm a foreigner, so embarrassing when I used google translation. I hope you understand
Hi! Neat watch and a nice heirloom. What do you want to know about this? Longines has a great customer service and will provide you all the information on this watch for free if you contact them. https://www.longines.com/certificate-of-authenticity Good luck
One reason why there have not been many responses to your post is because this watch was produced after Longines' most important years. The movement in this watch is not Longines' own design, as in the past. And the design of the case and dial is less distinctive of the brand. What I find interesting is that the movement has been adjusted in 5 positions and looks to be nicely finished. As @Radiumpassion stated above, contacting Longines is likely the best course of action to find out more about this watch.
Thanks for answering ! It seems that Longines has produced a machine based on the design of another watch firm to get the maximum thinness required. Longines has been acquired by Swatch Group, so some information about its past has been difficult.