Quote:
And why on this stamp are there BROWN...ORANGE and BLUE cancels..?
Unknown by me.
Usually RED and BLUE wax crayon indicate use on a Registered cover.
However, your scratch cancel suggests Fiscal use.
The brown, is actually India (Black) Ink scratch cancel, that has faded.
The only other wax crayon lines , that come to mind, are on Canadian bank Cheques.
First query:
Guess.
Try googling "Wiper Blade Flaw" or "Doctor Blade Flaw"