Chinese Confucius Script Tablet Piece

A boxed tablet shard piece with Chinese Calligraphy writing I purchased . This block tablet piece came in the box with the felt backing on the black stone piece and has a cut cushion (in shape of piece) lining ; box has writing on the top and the are the same as the felt backing with the stamp . The etched calligraphy on the stone is very small and some are gauged out and unreadable; have been told it is a partial prayer from the Confucius Script from the Han Dynasty.