Another possibilities.
It was struck VERY early in a press run while the Mint workers were trying to get the setup correct.
They might not have had the dies coming close enough to render a complete strike.
OR
The planchet might have been unusually thin.
Weighing it should confirm/deny this guess.
It was struck VERY early in a press run while the Mint workers were trying to get the setup correct.
They might not have had the dies coming close enough to render a complete strike.
OR
The planchet might have been unusually thin.
Weighing it should confirm/deny this guess.





















