1911 Great Britain Fiber Crown

Yes we had cardboard coins for schools years ago ,i dont know much about them but some of the metal ones where made by Onions and where the term "Do you know your onions" came from.I have been told because they are made from cardboard they are hard to find not beaten up or torn as kids played with them.Full sets in mint condition and in a box can command big money to the few people who collect them.I think most are covered in a book by Rogers.