It looks like this Part has been superseded by LEGO Part 30350b Tile Special 2 x 3 with 2 Clips [Thick Open O Clips].
Chronological order of the molds:
Click on a colored part below to see the Sets and MOCs that use part 30350a Tile Special 2 x 3 with 2 Clips [Angled Clips] 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 4 Mold variations of part 30350a - Tile Special 2 x 3 with 2 Clips [Angled Clips] in the database, in use between 1999 to 2017. See Molds and other related Parts.