Royal Army Ordnance Corps (RAOC) Other Ranks Bi-Metal Cap Badge, 1949 - 1953 - Gladman & Norman
King's crown die struck bi-metal cap badge with original slider to the reverse, maker marked (correct pattern in 3 lines) Gladman & Norman / Spencer Street / Birmingham 18. Scarce maker. This pattern worn from 1949 to 1954 only, when a Queen's crown pattern appeared
See
https://www.britishbadgeforum.com/makers_marks/gladman_norman.htm
for correct pattern of naming, as found here on this one for sale.
K&K No 2125 refers.
Coll
Code: 64527