Not likely from anyone here, unless the art is sucking in signals from the sky. (LOL)
Sorry for the bad news, and trying to be humorous at the same time. Spun aluminium dishes are a prized acquisition in the search for elusive electronic waves from the sky. They are also about the rarest find "in the wild". In the wild= unused or abandoned and able to be transplanted. Mesh types are the most common, and they are getting rare also. May have to do as a lot of us here do, take some rural roads with a spotter, looking for prey to be harvested. Good luck in your search. If your hunts turn unsuccessful, maybe an alternative canvas may have to suffice(?).