SGTF's Project A.P.E. micro coin is affixed to the inside of a locked container in the wilds of San Diego county. The tracking number can be discovered in documentation at the Simian Guerrilla Task Force's Forbidden Zone (FBZ) A.P.E. 53 "Mission Gorge" Top Secret Geocache (TSG).
Its discovery is worth 20 points towards an operative's rank on fbz.geocaches.org!