A relief portrait of an officer

The present relief presumably that listed in the Bertram MacKennal catalogue raisonné of sculptures on CD-ROM, which accompanied the 2007 AGNSW Bertram MacKennal exhibition: '(A relief portrait of an officer), 1917, bronze portrait relief, 46cm h, inscr.: B. Mackennal 1917, modelled in London, current whereabouts unknown'.