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|View static image|
|Number of cells||16|
|Discovered by||George Collins|
|Year of discovery||1970|
The tumbler is a period 14 oscillator that was found by George Collins in 1970. It is about the twenty-eighth most common naturally-occurring oscillator, being less common than octagon 2 and unix but more common than tub test tube baby.
- Achim Flammenkamp (September 7, 2004). "Most seen natural occurring ash objects in Game of Life". Retrieved on January 15, 2009.