Stolen from http://www.hassellcastle.com/cvsample.htm

1. Misprint on Instruction Card
2. Changed "CRANK" marvel to "SPIN", also "Defeat all RINGMASTERS" in sample version is a decal, as opposed to printed on playfield.
3. Changed "Acrobat" and "Juggler" playfield lamp inserts to "Acrobat Ready" and "Juggler Ready". These inserts where also changed from yellow to white.
4. Added into the production version the words "Bally Hoo" in front of the yellow targets as well as changed "Tickle The" to "Defeat The" in front of the Ringmaster.
5. Small Ringmaster heads were changed from decals in the sample version to being printed on the playfield. The word Multiball is printed in black underneath each of the RingMaster Marvels.
6. The most obvious of them all. The Ringmaster was changed before production from a normal shaped head to a more cylinderical fat head to help prevent the ball from getting stuck behind him.
7. Added the letters S-P-I-N to the 4 blue lamp inserts in front of the spinne

cvfield.jpg