Can you name some coins that have a reverse that you could mistake as an obverse?

The Albany Half is controversial in that some consider the side with the beaver to be the obverse, while others consider the side with the date to be the obverse.
Can you name some other coins (commemoratives or not) that have reverses that one could easily mistake for an obverse?
Dan
Can you name some other coins (commemoratives or not) that have reverses that one could easily mistake for an obverse?
Dan
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<< <i>The US Mint has always identified the Wagon side of the Oregon Trail Commem as the Obverse. >>
I believe the same holds true for the Arkansas commem... which really seems strange to me
<< <i>the buff nickel >>
The buffalo nickel was meerly struck upside down.
S
http://coinfacts.com/colonial_coins/massachusetts_coppers/1787_ma_half_cents/1787_ma_half_cents_by_variety.htm