WW1 On War Service 1915 munition workers badge H.B.SALE 'X'

A scarce original First World War official 'On War Service 1915 munitions workers identification badge', Crowned oval title, the voided centre bearing the 'Board of Ordnance' shield; the reverse with maker's details stamped in relief 'H.B.Sale' 'X' and impressed with official issue number '71471'. Good condition, complete with re-attached buttonhole fitting.
Height aprox 43mm.

Code: 63694