Era 1921-1945
Letter coding only.
Letter coding only.
LETTER | TONS (up to) |
years verified |
H | < 1 |
1921-1971 |
I | 1 1/2 |
1921-1938 |
J |
TON |
1930-1960 |
K |
2 1/2 |
1924, 1927 |
L |
3 |
1934-1958 |
M |
3 1/2 |
|
N |
4 |
1927-1956 |
O |
4 1/2 |
1926 |
P |
5 |
1954+, used with specific weight |
Q |
>5 |
1926 |
variation known without dash 1924 (single) script "SC" in circle black/orange 1925 (single) white/green 1926 (single) "SC" inside Palmetto Tree design green/white 1927 (single) "SC" inside Palmetto Tree design green/white 1928 (single) black/yellow 1929 (single) black/white 1930 (pair) "IODINE" vertically on right side white/black 1931 (pair) "THE IODINE STATE" bottom green/gray 1932 (pair) "THE IODINE STATE" bottom black/yellow 1933 (pair) "THE IODINE PRODUCTS STATE" bottom black/white 1934 (pair) "APRIL 30" top or "OCTOBER 31" bottom black/yellow(April) yellow/black(October) 1935 (pair) 1/2 year "APRIL 30" top or "OCTOBER 31" bottom color variations: red/white; white/red; black/white; white/black no rhyme or reason known as to color variations 1936 (pair) 1/2 year "APRIL 30" top or "OCTOBER 31" bottom yellow/black(April) black/yellow(October) 1937 (pair) 1/2 year unknown if APRIL exists - all I've seen are OCT black/white 1938 (pair) black/yellow 1939 (pair) black/white 1940 (pair) yellow/black 1941 (pair) black/yellow 1942 (pair) yellow/black 1943 (single) restamped from collected plates - most '42; rare unstamped exist no letter, assumed overflow of H-class yellow/black 1944 (single) strip applied to existing 1943; weight class matched, plate number did not yellow/green 1945 (single) normal plate; no letter, assumed overflow of H-class yellow/green |