Top left corner mildly bent, old distro sticker on the back.
UK original from 1983, 4-prong centre.
Matrix / Runout (Side A runout, variant 5): RT 136 A-3U-1-3-1 TimTom
Matrix / Runout (Side B runout, variant 5): RT 136 B-1U-1-2 -1 SLAP ME ON THE PATIO