Actually that is a great example of an off-center strike, a broadstrike by definition is a coin that was struck without a retaining collar used to hold the coin when it was being struck so it wouldn't expand beyond the preset diameter.
Well, most broadstrikes are off-centre to at least some extent. With no collar holding the planchet in place, a broadstrike can come down anywhere on the planchet, more or less at random. Having it in the exact centre would be unusual.
I'd say this fits the textbook definition of a broadstrike. A non-broadstruck off-centre would still show the reeded edge of a normal coin.
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