The documentation for European cars is in the hands of Marcel Schaub of Switzerland, who can be contacted via this email address: helene.schaub@bluewin.ch
I would agree that DeBonis was most likely a car dealer in Havre De Grace, Maryland. This car may have traveled across the Atlantic twice. Those are US tail lights. That is a 1973 L model VIN number, but the car has been retrofitted with pre-L rear bumpers.
I've had no luck finding mention of a DeBonis auto dealership however.
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