Ok, Ill have to revise my earlier observation regarding condition, now I've held it in my hands.
Earlier in the day, I was viewing it through a rather dirty capsule, locked inside a vitrine.
The condition is not mint... its "good". Theres some tarnishing of the matte areas and light scratching of the mirrored areas, and a few nicks around the ribbed edges. It looks like some goose has taken to it with the Silvo!
I wondered whether it has much numismatic value, given its condition. I thought that if I'm paying spot, I might as well be buying a brand spanking new 5oz from the mint from Series 2.