Identification Request - Flea Market Find, Shell

Hello, and thank you for any help you can provide.

Many years ago my mother bought me this shell as a gift (I am very interested in military history). I think at the time she said the person who sold it to her said it was WW1 57mm? I am curious if anyone can help me identify it, and most curious if it is dangerous. My wife dropped it on the floor in between us once, and other than leaving a dent in the floor, well, I am still alive to type this, so… there’s that.


Thanks for any help you can provide.

Some more photos…

WW2 57mm AP-T (armor piercing-tracer), see information below. No danger other than denting the floor or your toes!
The page below is from the technical manual TM 9-1901 Artillery-Ammunition-1944.

Awesome, thanks so much for the information.