This is a Kaiyodo King Kong bottle cap mini figure, specifically the "Ann and Kong" variant from the 2005 Japan release.
Part of a highly collectible set of figures released in Japan in 2004/2005.
Originally found as promotional items adorning the neck of soda pop bottles in 7-11 stores.
Features King Kong holding Ann Darrow.
The diameter of the cap is approximately 3.3cm
