3 metal spikes wrapped in string with torn paper label: "Oldest House on Triangle Arlington - Jan 16 1924 House Built 1740 (Perhaps 1720) Spikes &c" One spike is curved at top with 2 holes and is 11.625" long. One has a 1.5" head and is 4.75" long. The other has a .625" head and is 7.875" long.