Green Day have celebrated the 33rd anniversary of their debut album ’39/Smooth’ with a never-before-seen video and photos.The pop-punk icons shared an Instagram post that featured old throwbacks of the line-up that consisted of frontman Billie Joe Armstrong, bassist Mike Durnt and original drummer John Kiffmeyer.They also unveiled a video of them performing the LP’s track ‘Paper Lantern’ in a backyard in their home city of Oakland, California, a couple of weeks before the album’s release.A post shared by Green Day (@greenday)’39/Smooth’ was released on April 13, 1990 via Lookout! Records. It was later reissued in 1991 under the title ‘1,039/Smoothed Out Slappy Hour’s, which included their earlier EPs ‘1,000 Hours’ and ‘Slappy’.Fans took to the comments section to celebrate the anniversary of the “bloody great album”.