Push key trick  Padlock 284
brass padlock found in China.
The lock is 1.25" tall 3.1" wide and 0.7" deep
 one side of the lock is a button
but this is very hard to see !

 

If you push the plate inside... the side open
and swing by side

The bar is marked with a sign... which I can
not read... ;-)

01-220-2000