From my limited knowledge.
Movement number puts it at 1952
Dial and case looks like Norfolk however hands not so according to Watch Resources site.
I believe the 23z movement was a common longines movement and very reliable .
I do not believe case back is original hence the added horrible movement holder .
Whats with missing case backs for longines? I have two Longines with 23z /23zs movements without case backs.
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