Sony PlayStation 1 Pre-production Prototype Controller

This was purchased from a large scale thrift store in 2019; Feels very rough around the edges and felt like a toy, using a weaker mix of plastics (both top and bottom halves) (compared to final build controllers) and has more play to it when slight uneven pressure is applied on either side of the controller, and is also using a temporary logo with "PS" printed across the face of the controller. The cord at the connector end next to the magnet has the shielding missing but all the wires are there and the controller works.; It's unknown where it originates from, and why it was found at a thrift store.