Not stupid.
The loons mentioned are exactly the same except different. The 1997 shows both legs and is supposed to represent the loon taking off. For 2006 they reversed it, lopped off one leg, and described it as loon landing or something along that line.
The voyageur dollar reverse reappeared in 2003 after an absence since 1987.
"Dipping" is not considered cleaning...
-from PCGS website