I talked to a friend with a 48 Packard. Like the Chevy, you turn the key on, then push the starter button in the dash. I'm not sure if they werre still doing that in 53, but Chevy still was.
'59 Chevy BelAir (v8) '50 Chevy Fleetline DeLuxe ('55 235) '48 Chevy Fleetmaster coupe (late 261) Chicago