A SUPERB UNMOUNTED MINT lbottom marginal example of this RARE QEII ERROR. Complete with RPS certificate and a GREAT RARITY. We also only send to confirmed addresses.A SUPERB UNMOUNTED MINT" is in sale since Monday, September 4, 2017. This item is in the category "Stamps\Great Britain\Elizabeth II\Pre-Decimal (1952-1971)". The seller is "bbstampsltd" and is located in Basingstoke. This item can be shipped worldwide.