Sunpak Auto Zoom 2400 Thyristor Flash Unit - Untested

Vivitar Zoom Thyristor 3500 Flash in good condition

VIVITAR 285 Zoom Thyristor Flash Vari-Power Tested And Working

Vintage Vivitar 3500 Zoom Thyristor Flash Kit for Canon Boxed with DM/C Module

Vivitar Auto Thyristor 283 Flash / Flashgun / Speedlite

Sunpak Auto Zoom 3000 Thyristor Flash + Remote Sensor

Vintage Sunpak 3600 Auto Zoom Flash Thyristor

Sunpak Auto Zoom 2600 Thyristor Camera Flash & Case