Antique brass? bronze? Christ crucified on cross on stand w/unusual skin?

I found this at a thrift store the other day - it had just come in and was still being processed when I saw it & the manager agreed to sell it to me.

It measures 17" tall

Is it brass or bronze?

What's with the unusual condition of Jesus's skin? It doesn't look like it came from age but was made that way? (The photos taken outside show it better) - was it sculpted like this?

Any idea of it's age?

Finally, did it come from a church - or is there a way to know that?

Thank you for any information on it; I like this that it's different.

 

Looks like it has a bad case of casting porosity.