Another coin that would be cool to have, speaking as one who loves both coins and Halloween, is a coin that would have been used by Vlad Tepes. From Wikipedia,

"Vlad III the Impaler (Vlad Ţepeş IPA: ['tsepeʃ] in common Romanian
reference; also known as Vlad Dracula or Vlad Drăculea; November or December,
1431 – December 1476) was voivode (prince) of the principality of Wallachia, now
part of Romania. His three reigns were in 1448, 1456 to 1462, and
1476."