I've been doing this so long that I rarely can afford to make any additions or upgrades to my collection. (This is why my recent emphasis has been on 20th Century Varieties). Anyway, I've been wanting one of these for a while, but everyone I saw had a problem - priced too high - condition - etc. Although I'm not crazy about ANACS for several reasons, this one met my criteria. Just thought I would share here. OEG
It is only my perverse sense of humor which makes me want to believe somebody actually brain-faded two reverse dies into the press. In the real world, it's more likely a deliberately "assisted" error, which doesn't diminish the substantial Coolness Factor.
Your thoughts here have merit. I will say, though, that if there was ever going to be an accidental, 2 reverse coin, the early days of the Euro might be it. There was the large output gearing up for the initial release and multiple countries using the same reverse. Always a possibility.
What would you estimate to be the population of these extant? I'd think a greater number might be more indicative of an inadvertent error.
I'm guessing - and it is a guess - 75 - 100. Jon Sullivan said he has sold about 30 over the years. These things are, unfortunately, frequently more common than one might think.