Granted for 15 years commissioned service (sub-lieutenant and above) in the Royal Naval Reserve, active service in wartime counting double.
Instituted - 1908
Branch of Service - Royal Naval Reserve
Ribbon - Plain green ribbon, white edges being added from 1941 onwards.
Metal - Silver and silver-gilt.
Description - A skeletal badge with the royal cypher in silver surrounded by an oval cable and reef knot in silver-gilt, surmounted by a crown and suspension ring.
Pin mounted and cased as issued.
1967 date stamp on reverse