The boys are back in town, as An Post launches two new stamps to mark 50 years of Thin Lizzy.

They were unveiled on Thursday in Bristol, England by the daughters, grandchildren and ex-wife of the band's late frontman Phil Lynott.

An Post say queues formed at Dublin's GPO on Thursday morning as fans snapped up the two new stamps and special collector stamp sheets.

They were designed by Steve Averill, and are available at all post offices nationwide and at irishstamps.ie.

Thin Lizzy garnered a loyal worldwide fan base, attracted to their distinct twin guitar sound, explosive drums and Philip Lynott.

One of the greatest bands to come out of Ireland, Thin Lizzy remain giants of Irish rock decades after they first came together in 1969.

Artist Jim Fitzpatrick with the new stamps | Image via @jimfitzpatrick on Twitter

The stamps are based on the iconic artwork of Jim Fitzpatrick and cover standard postage within the island of Ireland.

Fitzpatrick is perhaps best known for his iconic two-tone portrait of Che Guevara created in 1968, based on a photo by Alberto Korda.

This image also featured on an An Post stamp in 2017.

On the new stamps, he said: "As a close friend of the late Phil Lynott, I am immensely proud to have my artwork included on these stamps.

"Never in our wildest dreams while working together would Phil and I have imagined that, one day, we would be acknowledged on a national stamp.

"It's a great honour, made extra special because another friend of mine, Steve Averill, famed for his U2 album cover artwork, designed the stamps."

Thin Lizzy Stamp Sets from #JimFitzPatrick
I present to you these very special sets to commemorate the release of the Thin Lizzy Stamps.

Check the out here: https://t.co/xpIZ8YtxXI#ThinLizzy #ThinLizzyStamps #IrishStamps #AnPost pic.twitter.com/B2DJ2Ffnv3

— JIM FITZPATRICK (@jimfitzpatrick) October 3, 2019