is this a taget ball and if so when was it made and how much would it be worth?

looks like a glass float for a fishing net. Here's a link that should answer all your questions:http://www.gemsoftheocean.net/id30.html

Yes, it looks like a Japanese float for a fishing net. They used to wash up on Pacific Ocean beaches.Glass floats, glass fishing floats, or Japanese glass fishing floats are popular collectors' items. They were once used by fishermen in many parts of the world to keep their fishing nets, as well as longlines or droplines, afloat.