Wow, yes, that is a cool looking Yale padlock. You’re correct, it is very unusual and I haven’t seen one either. Your padlock is a pin-tumbler style lock that dates back to the ancient Egyptians. Modern pin tumbler padlocks were first invented in 1848 by Linus Yale and his son made some small improvements.
https://www.precision-locksmiths.co.uk/a-history-of-locks/
The “bad” news, unfortunately your yale padlock is very poor condition. It looks it was used hard and for a long time! It’s very beat up!
It took me a while, but I finally found your padlock (or a very, very similar padlock) in our antiques archive.
Here is your padlock that sold in the past for $42 in very good condition:
https://www.antiquesnavigator.com/d-2001686/vintage-heavy-duty-supreme-brass-chain-padlock-corbin.html
I would estimate your antique yale padlock to be worth between $30-80 dollars based on the one example I could find. However, your padlock might not command the same pricing, because of the poor condition it is in, so price it accordingly.
Thanks for sharing! Very cool padlock!
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