The logo for the Scottish Region of British Railways, using the <a href="https://en.wikipedia.org/wiki/British_Rail" class="extiw" title="w:British Rail">British Rail</a> 'double arrow' logo.
British Rail Design Research Unit
SVG created from <i>British Rail Corporate Identity Manual</i>, sheet <a rel="nofollow" class="external text" href="http://www.doublearrow.co.uk/manual/2_10.1978-08.gif">2/10 - August 1978</a>