Picked up 2 AKG K240 from the flea market recently, golden one for $1 and black one for $0.5. : r/headphones
Vintage AKG K240 Sextett 600 Ohms Monitor Headphones Made in Austria | eBay
ArtStation - AKG K141 monitors 600 ohms
AKG K 140 K140 Cardan 2X 600 Ohm Made In Austria Headphones Vintage £39.99 - PicClick UK
LN005245 1 Pair 600 Ohm Dia 50mm Speaker DIY Custom Hifi Unit For SONY AKG Headset Headphone|50mm speaker|diy speaker unit50mm speaker unit - AliExpress
Vintage AKG K 240 Monitor K240M headphones 600 ohm Austria | | Reverb