LEGO part 92438 - Black Plate 8 x 16 at BrickScout
LEGO Two Baseplate ~ Thick ~ Green Plates~ 8 Dot X 16 Dot ~ 8x16~ Thick, Raised : Toys & Games - Amazon.com
LEGO Plate 8 x 16 cm dark grey: Amazon.de: Toys
Amazon.com: Eske Kouri Gobricks GDS-529 Plate 8 x 16 Compatible with Lego 92438 All Major Brick Brands Toys Building Blocks Technical Parts Assembles DIY (330 Olive Green(049),60 PCS) : Toys & Games