Musket ball US Colonial Coin Spanish Cross buckle balls

Hi, these relics were recovered with my whites detector over the last two weeks. They were all recovered from a corn field adjacent to the site of fort Herkimer. The surronding land is now homes, farms, roads and the Erie canal. The coin appears to be a Spanish half Reale The obverse or side with the date is worn completely smooth, the converse is almost complete but in poor condition. The large round object appears to be a common toy the soildiers made by flattening a musket ball I believe they were called whizzers. All were found with the owners permission. Thank you for bidding, treasure_place.