Size Chart

 cm -------Uk------- US

54 -- 6 5/8 -- 6 3/4

55 -- 6 3/4 -- 6 7/8

56 -- 6 7/8 --    7

57 --     7    -- 7 1/8

58 -- 7 1/8 -- 7 1/4

59 -- 7 1/4 -- 7 3/8

60 -- 7 3/8 -- 7 1/2

Date Code

K 1968
Z 1969
M 1970
X 1971
B 1972
L 1973 (1987)
O 1974
S 1975
R 1976
A 1977
U 1978
F 1979
E 1980
G 1981
I 1982
C 1983
H 1984
T 1985
P 1986
L 1987 (1973)
Y 1988
N 1989
D 1990

Feuerwehr-Fire Police.
General, gabardine fabric, one piece cockade and yellow cap cord , purple piping, purple band, two vent holes on each side of crown. Size 58 and dated "D" (1990). VEB 1856.
Officer, gabardine fabric, single piece cockade and silver cap cord, purple piping, two vent holes on each side of crown. Size 57 and dated "D" (1990). VEB 1856. 
Side cap. Gabardine fabric, circular textile cockade, purple piping. Size 55, date not readable. VEB 1856.
Freiwillige Feuerwehr-Volunteer Fire.
Female cap/kappe. Embroidered cockade. Size  53, no date, no markings.