🔎 UNIDENTIFIED Ideas on age? All I know is it’s a master lock key with serial number of 3383.

[DarthYoda333]

 

[xr7ator]

Modern. Older master lock keys are a bit fancier and even then are not that old.
My guess is your key was made in the past 40 years.

 

[robertk]

That's not a lock serial number, it's a key number. So if you had the lock but not the key, Master could send you a new key based on that key number. I don't know how old it is, but my guess is it isn't particularly old.

 

[AU Seeker]

Master lock keys have looked exactly like that for many, many years and they still look like that new, albeit not damaged as that one is.

No way to say what the age is.

 

[CloudKicker1]

Master lock keys have looked exactly like that for many, many years and they still look like that new, albeit not damaged as that one is.

No way to say what the age is.

I’d return it to your local YMCA or middle/high school. Might be a missing locker key?