Post your photo here then.
I'm also quite curious on how you determine that it was
refurbished, what you look out for...?
Sure , no problem

Previous trend , SLBP refurbishment :
Refurbish Flooring at steps , half flooring near entrance , and
sometimes after exit
New handgrips , desto holder cover painted grey , so as step
sides , mirror and bus stopping signs painted white , together with
back interior . new bells by side . seat sides painted grey
Now :
Refurbish Flooring at steps , half flooring near entrance , and
sometimes after exit , stopping signs painted white , together with
back interior , seat sides painted grey , desto holder cover
painted grey , so as step sides
No more new handgrips ..