Vintage Longines with Fascinating Caseback

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Hello

Can you identify if this is a legit Longines and if yes, is it redialed? Secondly, can anyone identify the meaning of the caseback? TIA!
 
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Looks legit to me. The caseback looks like another language to me, added outside of longines, probably a gift to the wearer for 10 years of employment somewhere.
 
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Hey guys, sorry for the late reply! Thanks a lot, appreciate the feedback. Very cool indeed, I wish there was a white dial though

@dan488 thanks for the link!