I apologize Lion.....I cannot resist being a total jerk sometimes.....Actually, I think that errors are the type of coin that cannot be priced as can a normal coin that is valued within the parameters of denomination, date, mint mark and condition.....I would think that true errors such as yours are priced spontaneously between the buyer and seller at hand.....the seller may ask $60 for it today, and get no takers, and tomorrow someone may offer $90 for it.....the day after that, there may be nobody interested in spending $20 on it.....Whatever you paid is what it is worth to you, while it may be worth more to me, and maybe less to Jane Doe, and although you may find a dealer who will list such errors at certain prices, I doubt that you will find agreement between dealers as to specific values (such is the nature of error coins as I see it).
That is what I meant through my original seemingly sarcastic comment.....very neat coin in great plastic, by the way.