Click to enlargeJ1379/P1524

Although these are described as regular die trial pieces in the standard references, it is more likely they were deliberately struck for sale to collectors as part of complete off-metal sets.

Examples were struck as follows:

Copper J1379/P1524 with only 2 or 3 known.

Aluminum J1380/P1525 with only 2 or 3 known, one of which shows corrosion on both sides.