An Lancashire and Yorkshire railway Hughes designed 4-6-0 express passenger locomotive with an LMS labelled tender but L&amp;YR number 1670.  The engine completed build on 2 May 1923 (isbn:0715353209 p271) and this as built image will have been taken very shortly afterwards.  Copy from the book The British steam railway locomotive, 1825-1925 p358 by E. L. Ahrons
E. L. Ahrons
<a rel="nofollow" class="external free" href="https://archive.org/stream/britishsteamrail00ahro#page/358/mode/1up">https://archive.org/stream/britishsteamrail00ahro#page/358/mode/1up</a>