In 1997, I posted this AE but weakly attracted to a magnet Geta/Asklepios of Pautalia to the least successful of my web pages. Replys were few. I'm no better. I probably have a thousand coins I never tested with a magnet. https://www.forumancientcoins.com/dougsmith/quest.html
Yes. This is from a book by Norman Davis published in Britain in 1967 where the author talks (pp 22 and 23) about the iron money of the Peloponnese. The book is, "Greek Coins & Cities". He calls these iron spits "obols" and describes them as iron rods or spits of about three feet length and a handful of six made a drachma a term which he says was later used for a silver coin of value equal to that handful of iron spits. There is a printed image on the hard cover of the book and on p. 22 there is a photograph. Since I am uncertain of whether it is permissible to make and post a photograph from a copywrited publication i am not including the photo but the spits are shown as pretty thin and you may be able to find the book on line with that photo.
I found pictures here. Photo from Svoronos, Lessons in Numismatics, Journal International d''Archéologie Numismatique (1906) A cautionary tale: "Unfortunately, although Ch. Waldstein immediately recognized the importance of his discovery, after being transferred to Athens, this band of spits was considered insignificant and, without even being recorded in the books of the National Archaeological Museum, was destroyed. Most of the obols were crushed to small pieces and thrown in the basements of the Museum, where the humidity, freely operating for twelve years, exacerbated the destruction. Fortunately, one of my former students in the lessons of primitive coins, curator of antiquities Mr. K. Kourouniotis, remembered that iron obols were once transferred from the Heraeum to Athens. With his help, and with that of the current director of the National Archaeological Museum, Mr. V. Stais, we discovered them in the basements of the museum...."