Great Western Railway type 5 signal box of 1894 preserved at Llanuwchllyn Station (nprn 41326) on the Bala Lake Railway/ Rheilffordd Llyn Tegid (nprn 34943). The box has a 21-lever frame of 1894.
Sources include: Peter Kay, Signalling Atlas and Signal Box Directory (Third Edition), Signalling Record Society, Wallasey, 2010, p.50; Network Rail, Signal Box Register (undated). 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, 11 March 2015.