Large brass buckle with forged iron pin. . . approximate date?

[watercolor]

I found this several years ago at a re-sale shop in a pile of junk that someone had just dropped off.
The actual buckle itself has no maker marks and appears to be brass with hints of a copper color patina in worn spots.
The buckle's iron pin appears originally hand-forged and has traces of pitting.

Any ideas to age or what it might have been used for?

Thank you in advance for any ideas!
watercolor

 

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[lonesomebob]

Holding your pants up ,of course hehehe

 

[CRUSADER]

Horse Harness Buckle.

Got A pile of them.

 

[watercolor]

CRUSADER, thanks for your help!

Best of luck for your future field hunts

 

[csmith]

leather watch buckle depending on size?