1 2 3 4 5 7 8 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
S. S2 Sa Sb Sc Sd Se Sf Sg Sh Si Sj Sk Sl Sm Sn So Sp Sq Sr Ss St Su Sv Sw Sy
S.c S.r

S.C.R.

Specified Commodity Rate. Applied to narrowly specified commodities. Usually granted on relatively large shipments. Theoretically is of limited time duration.