The symbol for the asteroid 26 Proserpina.
Symbol created by R. Luther
1853
Astronomische Nachrichten, Volume 36, col. 349-350. <a rel="nofollow" class="external autonumber" href="https://books.google.com/books?id=o2M_AAAAcAAJ&amp;pg=RA1-PA37">[1]</a>