Six-Cornered Pyramid – No Closure – Reduced Flap Closure C30.40.01.11 Six-Cornered Pyramid – No Closure – Reduced Flap Closure C30.40.01.11 Production Team2021-05-18T21:58:59+08:00 ECMA C30.40.01.11 Six-Cornered Pyramid - No Closure - Reduced Flap Closure