Did a little research. Control area on a CT2526 seem identical.
Uses GP-76 chassis. Other models CT2516, 2536, &2546
Probably one of them. Very conventional set, 2 main boards
& regulated power xformer like Zenith. Made apx 1976-77
I dont see the Quintrix logo.
Be a shame to let it go, wait a week & offer $50.......
I wouldnt pay more unless it has a perfect jug.
73 Zeno