Silver Buckle ID

[Smoogle]

Hi,
Found in saltwater at an old swimming spot (Australia) - any help with ID / numbers would help. It measures approx 40mm x 25 mm and looks for all money to be silver.
Thanks

 

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[CRUSADER]

No idea on the numbers, not sure if silver, as tombac looks similar (although it does look silver in the picture).

The off-set bar indicates a heavy leather strap, which screams horse tack. Pretty sure this was a bridle piece.

Also the bamboo type decoration was popular in the 1890s.