I looked on a Beaumont frame today and found the "hidden VIN" we always hear about. It was on the passenger rail just behind the trunk floor body mount (second mount from the back)
I had never actually seen one before. The whole VIN was not there, only partial. Interesting to see though.
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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles
1966 Grande Parisienne, 396 1 of 23 factory air cars
I talked to a guy at the CanAm Chevelle show in Grand Island Now York a few months ago about his 67 Beaumont SD. He is the original owner. When he did the restoration he found the same PON stamped on his frame. James
I know this is a old post but Just looked at my 69 Beaumont frame and has the following ;
Part # 3943331
5-1-69-2
There is no PON But there is the letters ( Yes ) looks like it was stamped over one of the factory holes in the frame so blocks out the other letters.Y could be a V not sure. You can just see remnants of two other letters. mabe Hayes.