The market for painted coins with rotations from what is expected has not yet developed. So, determing a value is difficult.
Some collectors like to consider these as traditional error coins, others tend to view them as something less and potentially worth less than a 'correct' coin.
One thing to be aware of, rotations of less than 10%, even when engraved obverse and reverse dies are involved, carry little premium - they are generally considered minor rotations at best.
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