CIC Crystal Earphone 20MOhm 0.8m Lead

CIC-Crystal-Earphones-CIC-04-304-p-High-impedance-earphones-from-CIC-fitted-with-cable-Intended-for-use-with-crystal-radios-p-CIC-Crystal-Earphone-20MOhm-0-8m-Lead

Price: £2.06 from Rapid Online Rapid Electronics Ltd.