Halfpennies, 1937-1952

George VI, First Obverse, 1937-1948

1937, BU full lustre		1937, PROOF
1938, BU almost full lustre		1939 UNC much lustre
1940 rev A		1940 rev B, BU much lustre
1940 rev C, AU good lustre		1941, UNC much lustre
1942, BU full lustre		1943, UNC good lustre
1944, BU almost full lustre		1945, BU almost full lustre
1946, AU almost full lustre		1947, BU almost full lustre
1948, BU full lustre

George VI, Second Obverse, 1949-1952

1949, UNC much lustre		1950, BU full lustre
1950, PROOF		1951, BU full lustre
1951, PROOF		1952, BU almost full lustre

Lustre Terminology for copper and bronze:
Trace  - 5% to 20% lustre
Good - 21% to 50% lustre
Much - 51% to 70% lustre
Almost full - 71% to 90% lustre
Full - 91%-100% lustre