Bronze plaque in concrete block, down 0.30m with steel cap (flush) in concrete protection pad placed over block. ID plaque attached to block (18 Dec 1997). Geodetic Code previously allocated to Blk 22 (SO 17042). See GEO0204-10 of 21 Nov 1997. Mark is 6.7m to edge of seal and approx. 0.1m below the road.