The Vin number does look strange. Is it held in place by glue? Your VIN TAG Rivets have been removed..There is a lot of re-body being done so I would verify your vin..
Description Interpretation Code
Make/Model/Engine: Plymouth Belvedere V8 R
Model/Series: 300L, Coronet 500, Dart GT, Monaco, Satellite, Signet, Sport Fury 4
Year: 1965 5
Assembly Plant: Lynch Road, MI 1
Sequence Number : 167345 167345
http://www.ply33.com/Misc/vin
I failed to mention that the VIN tag was spot welded in place which i was vaguely aware of was correct method .The trouble was "the double stamping".Thanks to all for their feedback.No, that's the way they're supposed to look! No rivets.