What would you experts out there make of this Longines?

Posts
7,623
Likes
21,858
If it's not Kosher it would fool me. To me it looks great. However I'm no Longines expert. I bet Syrte will know.
Grateful for the nod but I have not studied those 1950s/60s designs. I would have found it beautiful except for the schrewd comments above noting the caseback appears to have been ground down.
 
Posts
7,762
Likes
26,975
The dial and hands are perfectly correct, and a nice variation.