Percy pig

Hi all from Northern Ireland. Some great chat here and knowledge also. I hope the knowledge stretches to my topic. I currently own a Parker Hale which I believe is the 803 trap gun. I here a lot of talk that this gun is pretty much a Winchester Grand European. .any truth in this. Also being told as they are fairly rare that there is a lot of interest in them at the minute and as you are a knowledgeable lot I hoped you could clarify. Many thanks for a great forum as well.