Here's a list of extinct coasters i've ridden.
Euclid Beach: Racing coaster, The Thriller, FlyingTurns.
Chippewa Lake Park: The Dipper, Wild mouse.
Conneaut Lake Park: Wild Mouse. \
Cedar Point: Jumbo Jet.
Geauga lake: a Jr. wooden, i think it was a Vettle. circa 1970's.
To me, Rare credits are coasters in other Countries. Chances are, i'll never go to Europe, so to me, those would be rare.