Hi all. I'm new to the site and have a question concerning an AYA 12ga double I brought back from Spain in the late 90's. How can I tell if it is a model 2 or model 53? I have been looking on line and I have "Spanish Best", but I really don't know what I have except for a beautiful gun from the late 50's. I also have a Victor Sarasqueta (model 4E I believe) that looks very similar to the Aya. thanks