Indus Valley script

[Keameo]

I picked up a wall plaque in Germany many years back. It's made of what appears to be copper and features what I assume to be a bull and possibly a symbol of grain or some kind of plant. I cannot identify the language on it and it does not resemble any of the languages i've encountered. I attach a photo below. It would be great if anyone is able to tell me more about the language or the plaque itself.

 

[entangledbank]

It's Indus Valley script, which is so far undeciphered.

 

[Keameo]

It's Indus Valley script, which is so far undeciphered.

Thank you so much!! I have always wondered. With just the additional information of the language I actually found another one online that is identical (only polished up)