I think he said it was a * on the bottom row, which signifies made in USA.
The delta, or triangle at the beginning of the bottom row denotes Holland. If it was an F it would be France. All three countries made them based on the same design in Philips-owned factories.
The delta, or triangle at the beginning of the bottom row denotes Holland. If it was an F it would be France. All three countries made them based on the same design in Philips-owned factories.