the pass side seat [always optional] was the same as the drivers one on the panel, and the same from at least 48-59 - I suspect that the seats that flip forward as Tony'N describes is the pass side of the burb seat - not uncommon to have a truck that a PO decided to install a pass seat and used whatever

Bill

Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics