Finally found a pair of vintage gold AKG K240 headphones (sans-decal caps, of course). $8.99+$1.99 for another pair of AKG K40 (missing ear cushions). These were the real win today, tho. :
V MOTA NOX Headphone boxs For AKG Y30 K40 K45 BT K420 K404 K403 K402 K451 K450 K452 Y40 Q460 K480NC K840 headset Carry case|box for|box boxbox for headphones - AliExpress