It looks like this Part has been superseded by LEGO Part 3298 Slope 33° 3 x 2.
Click on a colored part below to see the Sets and MOCs that use part 30474 Slope 33° 3 x 2 Smooth in that color. You can find an overview of all LEGO Colors here.
If a color is missing, it probably needs to be added to a Set Inventory.
There are 3 Mold variations of part 30474 - Slope 33° 3 x 2 Smooth in the database, in use between 2001 to 2008. See Molds and other related Parts.