Regulation matching set of convict road gang 'Double Irons', with cold chisel marks on the irons which indicate that they have been used then 'Struck off' by the blacksmith. According to the vendor this is the only known matching set of top and bottom leg irons (double irons) with the broad arrow and board of Ordinance stamp; the elongated top irons were made in this shape both to get at the rivet head on the bottom irons and also to take the chains which linked the groups of convicts, together in work parties and also at night when in the portable huts; this to make escape more difficult