.NzQ.MTMxODU
From transcribe
Government
WD
Explosive
Map Section General Staff G.H.Q. No. Date 19/8/17
Passed Field Censor 2316
G.M. Downton
BC Archives GR-0392 Box 1 Volume 6 / FRANK SWANNELL PAPERS / Diary and enclosures, 1917.