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This milestone is a Grade II listed structure, and the depression on top is probably the remains of a "pivot" bench mark established in 1844 during the First primary levelling of England & Wales, which was levelled with a height of 60.1740 feet [18.3410 metres] above mean sea level (Liverpool datum). It was included on the Manchester to Gloucester levelling line. The surveyor's description was "No. 393. Mark on top of the 4th milestone from Worcester, and 6th from Upton-on-Severn ; 2.54 ft. above centre of road." (Public Abstract p.35)