Ducatti, as far as I remember, I didn't have to polish that sign, it came in that great condition. I usally use a Meguiars car polish when required.
Sign seekeryour right, I recently was going to bid on one in the USA, but it didn't have the vignette, it was also single sided?? So I wasn't sure if it was right?? So I chose to leave it alone, one of my favourite signs, it's got everything you want in a sign.
Gordo