Arm rest placement??

seen a couple different early A's with the arm rests in different positions. some parallel , some tilted foreward, some tilted back? anyone know what the factory position is or is it another mopar thing where each plant did it different with what they had?
i think its where geting 40 year old stuff and thay brake ezy we have junked like 7 63to 66 a bodies but that all saved more than that lol so dont hate me lot of the had that kind of thing