Class 4 LEGO® → LEGO → System → Basic 306 (1, 2) << 307 (Set 2) >> 308 (1, 2, 3) 307 Basic Building Set is a Basic set released in 1987. External links Brickset Peeron See a price and investment guide on BrickPicker.com Categories: Class 4 articles Duplicate numbered sets Unknown Ages Unknown Price Sets with unknown piececount 1987 sets 0000 sets Basic