* Add 4 Part 2412a Blue Tile, Modified 1 x 2 Grille without Bottom Groove / Lip (match ID 1)
* Change 4 Part Blue 2412b Tile, Modified 1 x 2 Grille with Bottom Groove / Lip {Regular to Alternate} {match ID 0 to 1}
Comments from Submitter:
Source: Set from my personal collection which was bought new and not mixed with other parts. All 4 parts in my set are 2412a.
Germany, Niedersachsen
