This is the lower left hand corner of a Roman commemorative stone. Professor Lawrence Keppie of the Hunterian Museum thinks that there may have been some decoration on the missing part. He has reconstructed the whole inscription as "For the Emperor Caesar Titus Aelius Hadrianus Antoninus Augustus Pius, father of his country, the Second Augustan Legion built this under the command of Quintus Lollius Urbicus, the Emperor's legate with praetorian powers". Urbicus was Governor of Britannia from AD138/9 to AD143. The discovery of this stone, recording building work by the Second Legion, established that the Wall ran from the Forth to the Clyde; previously its location had been in doubt. As a result, the antiquary Alexander Gordon described the stone as "The most invaluable Jewel of Antiquity that ever was found in the Island of Britain".