64 Dodge Dart vin # attachment

All of the early A`s I have had it was spot welded and had holes drilled through it that were left open.

ALL '65 Darts that I have seen have a non-rosetta rivets that holds the VIN Tag in place.

ALL '66 Darts that I have seen have Rosetta Rivets that hold the Vin Tag in place.

I dont know about '62, '63 and '64 A's. Could be as you say, glued on with 2 holes used to hold/press in place.