Here is the reply I got from the seller:
"Are you sure as i have had this sign over twenty years and it has some small
marks on it also if this is so that is why i offer refunds because i
collect this stuff too there is noyhing worse than to be disapointed with
your purchase Thanks for your infoafter second looks i still belive it to
be original Mick"

I remember the good old days when gold was worth more than rust!