Variants of a mold are catalogued separately, so each one has its own sets and minifigs. Check these too if something you expect is missing here.

• 3009pr0018 Brick 1 x 6 with 'POLICE' Serif Black Print Alternate of this part
• 3009b Brick 1 x 6 with Bottom Tubes and 2 Lowered Cross Supports this part is a print of it