Banksy Road work Signs

Description:

I have 2 different road work signs.
These are original British road work signs,
1 is a white metal sign, with blue circle with arrow, features Banksy's road worker rat.
1 is a red metal sign, with 'RAMP' in white features a parachuting rat with the banksy tag.
I have had then around 6 years.
I have no way of proving if they are real or not, the previous owner did contact pest control, but they would not comment either way.
I know how much I paid back then and have seen how much these sell for now.