What is it?????

[abunaitoo]

It looks like some kind of sling buckle.
Strange thing is it has a lock on it.
Don't have the key.
So................
What is it???
What does it fit??????????
How does the lock work and what does it do?????
287405287406

[Land Owner]

Cannot say what it is, but it certainly IS a lockable buckle (obvious to the most casual of observers). I doubt it would be difficult for a locksmith to make a suitable key, which appears to be a one-pin tumbler that rotates a slide in/out spring loaded cam for the slit-slotted and slot-slitted blades (been wanting to use that for a long time).

[Sasquatch-1]

My guess (and it is only a guess) is it is off an old straight jacket. Can you post a picture with a coin or something else for scale?

[tunnug]

My guess would be a buckle for a chastity belt.................

[JimB..]

Daughter had a diary as a kid, similar lock.

[MrWolf]

Daughter had a diary as a kid, similar lock.

That was my thought as well.

[salpal48]

That appears to Be One side Of a Currency Bag . The other side was metal also . The bag was made of leather and Canvas. Could be For other items as well

[omgb]

These are common on Leg O Mutton gun cases

[Der Gebirgsjager]

A Peerless handcuff key might work.

DG

[abunaitoo]

Picture with a quarter.
287470

[elk hunter]

These are common on Leg O Mutton gun cases

I have a leg-o-mutton case with that type of strap lock on it. I suspect they were used on other types of luggage also.

[GL49]

These are common on Leg O Mutton gun cases

Exactly.

[jonp]

Daughter had a diary as a kid, similar lock.

My guess. Both my sisters had a diary with something like this. Didn't stop me from reading them, though