New Treasure George Roby Vase??

Just picked this up today tucked away in the back of an old home in Indiana. I was pretty excited to see when I first came across it but most defiantly even more so when I turned over to look for any markings... I only know very little about George Roby porcelain so I can only speculate... I'm wondering if this could be a later George Roby Original? In know he typically marked his work GR but from what I've read, not always.... Can anyone lend me some knowledge in determining if this could possibly be a George Roby... I would really appreciate any kind of feedback, positive or negative!