Seat Smoking

A retro fit window sticker in a vintage 1966 double decker bus.  Original notices of that era tended to be on plaques or printed directly on surfaces.  While the sticker is a more modern method it's still quit old as the vintage hint is still there, with the reference to "in the seats", a particular turn of phrase.  

There's some tempting literal interpretation possible here too.  "Seats" here is about the seating area, so no smoking in the seating area please.  Rather that to mean the inside the fabric or construction of any of the individual seats which is then described in the plural....those seats would not have been of modern fire retardant standard......

Looks like there's been some attempts to remove it, a possible recent recognition of it's rather surplus status with a modern accepted default of no smoking in inside public spaces.