Yes, it is a cool error. But I am doubtful that the cupped coin represents an obverse die cap. This amount of cupping can occur in a single strike, in my opinion. I believe this is also true of most cupped coins with a full, centered brockage on the reverse face. By definition, a die cap must strike at least one other planchet after the coin adheres to the die. Here's why I don't think this qualifies as a die cap:
1. The brockage shows even expansion across the reverse and is clear throughout. If the coin had struck even one additional planchet, the brockage would be almost obliterated in the center, where it lies directly beneath the die face while the peripheral brockaged elements would remain clear.
2. If this was a true die cap, it would have produced at least one counterbrockage cent. This would also be true of the many other "die caps" that have been so labelled. However, I have only seen about half a dozen centered counterbrockages in the zinc cent era, and very few overall in recent years among all denominations.
3. "Cup and saucer" mated pairs generally feature a double-struck reverse die cap and a cupped top coin with a full brockage. The expansion of the brockage matches that of the reverse die cap. This means the top coin could have been struck only once (the strike that created the reverse die cap).
Mike Diamond is an error coin writer and researcher. Views expressed here do not necessarily reflect those held by any organization I am a member of.
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1. The brockage shows even expansion across the reverse and is clear throughout. If the coin had struck even one additional planchet, the brockage would be almost obliterated in the center, where it lies directly beneath the die face while the peripheral brockaged elements would remain clear.
2. If this was a true die cap, it would have produced at least one counterbrockage cent. This would also be true of the many other "die caps" that have been so labelled. However, I have only seen about half a dozen centered counterbrockages in the zinc cent era, and very few overall in recent years among all denominations.
3. "Cup and saucer" mated pairs generally feature a double-struck reverse die cap and a cupped top coin with a full brockage. The expansion of the brockage matches that of the reverse die cap. This means the top coin could have been struck only once (the strike that created the reverse die cap).