If the photograph is clicked, it grows.

HP 16478A 520uH Reference Inductor
JPY60,000 1 stock
lcr362

Inductance 520uH // 8pF No8
Q 210 (350KHz)
Resonance 350KHz (400pF) 1000KHz (50pF)
Rs 5.4 ohms R(DC) 4.2ohms