I have one on the shed, a bit different, but same setup.
It has to be at least 30 years old. My dad gave it to me to use on my school locker when they "ran out" of school locks and wouldn't issue me one. Half the kids had been bringing their own cheap locks and they were cutting them off with bolt cutters every morning, leaving them laying in front of the locker, so that you thought twice about putting another lock on again.
He handed me that lock, and told me put it on.
Got called to the office the next morning, 2 custodians tried to cut it off and said they couldn't, principal ordered me to take it off, I refused...said my father said provide me with a lock or call him.
So he called the old man.
You wouldn't believe how fast they found me a lock, and finally the rest of the kids got them too.