Date of Issue: 12th June 2013
four stamps (0.10, 0.42, 0.44 & 1.75 GBP)
NOTE - those stamps don't bear the official Europa stamps logo.
Gibraltar isn't a full PostEurop member but issues Europa stamps non stop since 1979, they used only once the official PostEurop logo in 2012.
those stamps are issued in mini-sheets of 8 stamps