Trick Lock #7 Puzzle

This metal trick lock looks like a traditional padlock, complete with an ornate design around the keyhole and a uniquely shaped key, but opening it requires more than simply turning the key. The challenge is to discover the hidden trick that releases the shackle and unlocks the puzzle. Designed by Teddy Sakamoto and part of the Puzzle Master Metal Collection. 

Object: Open the lock
Difficulty: 7/10, Challenging
Designer: Teddy Sakamoto
Material: Cast metal
Dimensions: 4.6 × 1.2 × 6.3 cm
Packaging: Plastic clamshell
Brand: Puzzle Master