Tamper indicating closure assembly

In a linerless tamper indication closure assembly comprising, in combination, a closure cap for a container comprising a uniplanar circular end wall for disposition entirely above the neck of a container and a depending cylindrical skirt for telescoping reception of the container neck, cooperating non-bondable means on the skirt and the container neck for removable engagement of the cap with the container, a removable overcap having a uniplanar circular end wall overlying said closure cap end wall, and said overcap having a depending circular skirt surrounding said cap skirt coupled to the container neck and without being coupled to said closure cap, said overcap having a transparent window, a rupturable sheet disposed between said closure cap and said overcap and being exposed through said window, first means bonding said sheet to said closure cap and second means bonding said sheet to said overcap, whereby said sheet is caused to rupture upon lifting off said overcap from said closure cap, as well as upon turning said overcap in either direction relative to said closure cap, thereby evidencing tampering before removal of said closure cap from said container neck.