Paying tribute to classic video-game icons, Ireland's state-run postal service today released four stamps featuring Mario, Sonic the Hedgehog, Pac-Man and Space Invaders.

Taito Corp.'s Space Invaders and Namco's Pac-Man -- debuting in 1978 and 1980, respectively, making  them the oldest of the quartet -- are represented by screenshots, while Nintendo's Mario and Sega's Sonic themselves are showcased on their stamps.

The stamps are issued by An Post and designed Dublin's Zinc Design Consultants.

(via reddit)