| I'd recommend use of a razor blade, and then attempt to use Windex or similar glass cleaner to remove the residue first, before you break out the really harsh stuff.
+ 2002 MINI Cooper S - Dark Silver / White roof, Sport, Premium, Lapis blue leather
+ 1965 Mini Traveller - Tartan Red / White roof, 1275, Cooper S discs, fully restored/renewed | 
