This invention pertains to a combination locking storage container consisting of a tray and a detachable combination locking cover assembly used to secure the contents held within. The tray has an integrally formed key post at its uppermost position. The tumblers of the cover assembly engage the key post and lock to it. When the indicia of the tumblers and correct unlocking code are in alignment with a marker, the cover assembly may be installed or removed.
