If the origin is indeed 1872 and was found the way it is thought in the article, it is pretty interesting!
The fact no one can decipher the symbols is not too surprising. Remember Voyagar One placque with the line drawings of a man and a woman, and lots of symbols to show where our sun is in the Milky Way, and our relation to it, and our carbon-based life, etc? It was sent to dozens of world-wide scientists and scholars for their interpretation (to see if the symbols were very clear or not) and no one could decipher much of anything!
So the symbolism, who knows? Maybe hoax, maybe a message from the stars? Maybe, in code, it is the long-sought ‘World’s Best Potato-Salad’ recipe.
Of course, one would think if it was a message from the stars, they would have sent several hundred, to help make sure at least one or two were found and ultimately delivered to the hands of a scholar to interpret it. And then send addendas.
Dan, once again babbling away with no real contribution