Tintern Station Signal Box is a McKenzie and Holland type 3 design built for the Great Western Railway; Network Rail's Signal Box Register gives a date of 1876 and Hadley & Dingwall's `The Wye Valley Railway? gives probably 1908 when the Wye Valley Railway was taken over by the Great Western Railway. The box has a stone-built locking room with a timber-framed upper floor, fully glazed on three sides, under a pitched slate roof. The box closed in 1960 and its 25-lever McKenzie and Holland frame was removed soon afterwards; the building is currently in use as the old station visitor centre.
Sources include: Peter Kay, Signalling Atlas and Signal Box Directory (Third Edition), Signalling Record Society, Wallasey, 2010, p.78; Network Rail, Signal Box Register (undated); CADW listing description; B M Hadley and R Dingwall, The Wye Valley Railway, Oakwood Press, 2nd Ed, 1982. For further information on the types and designs of signal boxes see: The Signalling Study Group, The Signal Box - A Pictorial History and Guide to Designs, OPC, 1986.
B.A.Malaws, RCAHMW, 31 March 2015.