<a href="https://en.wikipedia.org/wiki/QF_4_inch_Mk_V_naval_gun" class="extiw" title="en:QF 4 inch Mk V naval gun">QF 4-inch Mk V gun</a> on Australian destroyer <a href="https://en.wikipedia.org/wiki/HMAS_Vampire_(D68)" class="extiw" title="en:HMAS Vampire (D68)">HMAS Vampire</a>.
not stated
This image is available from the <a rel="nofollow" class="external text" href="http://www.slv.vic.gov.au/our-collections">Our Collections</a> of the <a href="https://en.wikipedia.org/wiki/State_Library_of_Victoria" class="extiw" title="w:State Library of Victoria">State Library of Victoria</a> under the Accession Number: