They are interesting for the fact that they are very plain and undecorated for the time, with only one plain central panel at the back and no armrests.
Patrick sits between them, turning and twisting his body to try to find a comfortable position for his leg cast, which he's wedged up on the armrest between the front seats.
OK, please now ensure that your seat is upright and in the take-off position, with armrests down, your footstool and video screen are stowed if you have them, and your table is folded away.