Cartwheel July 20, 2022 by The BBS Agency An effect caused by the natural lustre on most mint state, and on some proof coins. When the coin is tilted back and forth, beams of light seem to circle the central devices of the coin. Also a slang term for Silver Dollar. Related Articles: Glossary: DMPLGlossary: Flow linesGlossary: Satin lustreGlossary: Whizzed