Below is a scan of the cover and a selection from the illustrations by Sam Weber. There's also an introduction by Michael Moorcock. It starts like this:
In the late 1960s my friend J.G. Ballard phoned me full of outrage. Feeling weighed down by the bad prose cluttering his study, he had dug a pit in his back garden and thrown his review copies in, splashing them with a little petrol. But they proved harder to burn than he thought, so he put one in the kitchen oven, which had a suitable thermometer, to test the igniting heat of the book paper. 'Bradbury was wrong!' he complained. 'Fahrenheit 451 isn't the temperature at which book paper burns!'
You may have read Fahrenheit 451 before, but reading the Folio edition is a whole new experience.