has been used in at least 5 LEGO sets over the past 60 years, since it was first used in 1964.
48x48 LEGO® Baseplate, 4186 – Atlanta Brick Co
LEGO Gray Baseplate (11024) – The Red Balloon Toy Store
Large Genuine Lego Light Grey Base Plate Board 48 x 48 Stud 4186 – littlemuffinsthings
Lego 4186 Gray Base Plate Baseplate Light Grey 48 X 48 Stud Large 15x15 Square
LEGO 4186 Light Gray Baseplate 48 x 48 electricBricks : LEGO set and parts shop and database
LEGO Sets with Part 4186 Baseplate 48 x 48
2x LEGO Baseplates 48x48 Item No 4186 Light Grey Vintage Old Type Colour for sale online
MOC Set GDS-1201 Baseplate 48 x 48 compatible lego 4186 pieces of children's toys Assembles Building Blocks Technical - AliExpress
2x LEGO Baseplates 48x48 Item No 4186 Light Grey Vintage Old Type Colour for sale online
1 x Lego System Construction Basic Plate 38 x 38 cm 48 x 48 cm Nubs Space Mosaic Mosaic 10701 628 4186 Grey : : Everything Else
LEGO Blue Baseplate 48 x 48 (4186)
LEGO Sets with Part 4186 Baseplate 48 x 48
LEGO Baseplate 48 x 48 (3497 / 4186) Comes In
LEGO x 5 Light Bluish Gray Baseplate 48 x 48 4186