Thumbwheel Radio Bezel Mystery

I bought a NOS Radio bezel sight unseen for my ‘69 Dart thumbwheel radio using the factory 69 parts manual as a reference for the correct part number.

I was surprised to receive a bezel with the correct part number 2864525 on it but has a 3 hole mount instead of a 4 hole mount like my original bezel.

Does anyone know why there is a 3 hole and a 4 hole mount bezel? I’ve never seen the 3 hole bezel before.

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Here’s the original 4 hole bezel in my car.

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