Miscellaneous Tokens and Checks, C.F.G. Co, plated Sixpence, rev. value, edge plain, 19mm, 4.00g/12h. Very fine and extremely rare £60-£80

DNW Auction T1, 15 December 2005, lot 2248; DNW Auction 176, 26 May 2020, lot 176

No other examples traced by the cataloguer. The issuing authority is not known, but the style would suggest the piece emanates from the early 19th century and the suggestion has been made that it could be Irish.