There were at least two sizes of Wild Mouse roller coasters built by Ben Schiff.
Ads found in Billboard magazine provide some information on the different models. In April 1958, only one model was advertised at a price of $40,000. In 1959 two models existed, a park model at $37,900 and a portable model at $18,900 (the first digit in the microfilm is illegible, but the "1" is assumed). 1960 advertisements listed only a price range of $23,900 to $37,900.
A Schiff Wild Mouse advertisement from 1958 lists "Waldameer Beach Park, Erie Pa." under "Commitments for 1959". Waldameer did not have a Schiff Wild Mouse but it's believed a Pony Cart ride and/or a Wet Boat kiddie ride.