![Can any of you help me identify and spec' these old diodes? The 1N198 is an easy ID, but specs are scarce. Gold leaded diodes are labeled F4 and F8, and both Can any of you help me identify and spec' these old diodes? The 1N198 is an easy ID, but specs are scarce. Gold leaded diodes are labeled F4 and F8, and both](https://preview.redd.it/can-any-of-you-help-me-identify-and-spec-these-old-diodes-v0-1e0cufovyxaa1.jpg?auto=webp&s=82cf58ce0ba531d6b7506081ab8b8453693d2843)
Can any of you help me identify and spec' these old diodes? The 1N198 is an easy ID, but specs are scarce. Gold leaded diodes are labeled F4 and F8, and both
![Old tube diode displayed in Museum fur Kommunikation Communication museum Mitte quarter Berlin Germany Stock Photo - Alamy Old tube diode displayed in Museum fur Kommunikation Communication museum Mitte quarter Berlin Germany Stock Photo - Alamy](https://c8.alamy.com/comp/B22NGT/old-tube-diode-displayed-in-museum-fur-kommunikation-communication-B22NGT.jpg)
Old tube diode displayed in Museum fur Kommunikation Communication museum Mitte quarter Berlin Germany Stock Photo - Alamy
![Old vacuum tube AZ1 dual diode rectifier. Used in the power supply section. European socket Stock Photo - Alamy Old vacuum tube AZ1 dual diode rectifier. Used in the power supply section. European socket Stock Photo - Alamy](https://c8.alamy.com/comp/EHXBNP/old-vacuum-tube-az1-dual-diode-rectifier-used-in-the-power-supply-EHXBNP.jpg)