ooak Pilgrim Glass Cat dish

These were made "live" at the 1964 World's Fair. I recently ran across one of these and bought it. There was live glass blowing and this is one of one? One of thousands? I bought a Pilgrim collection from an older lady who got this at the 1964 world's fair from the Pilgrim glass company display. She watched them make it. Her mom picked blue. Its a very unique piece of Pilgrim glass.