"USA" mark ball pitcher

[jagandjag]

My wife and I picked up an old dark brown with light lip ball pitcher at a yard sale.  On the bottom, it is signed what appears to be "Orin Prief" on top of a "U.S.A." marking.  I've spent over 2 weeks trying to research this online.  I can't find any name that comes close to the marking/signature.  Any help would be appreciated.  

[Michelle Staley]

Could it be "Oven Proof", the glaze is called a drip glaze. Many companies made this type of item.

[jagandjag]

Michelle, I think you are correct.  Someone had told us that it was a "signed" pitcher.  I think you have solved the mystery "signature." 

Thank you so much for taking the time to look at my submitted question.

Abel