Vivitar 3900 Auto Thyristor and Remote Sensor Flash Untested

Vivitar 3900 Auto Thyristor Tested Working With Mount

Sunpak Auto 611 Thyristor Flash + Remote Sensor + Charger + Untested

Vivitar 3900 Auto Thyristor Flash w/bracket, cable & block used good condition

Vivitar 283 Auto Thyristor Flash Untested Broken Shoe Parts Repair

Vivitar 283 Auto Thyristor Electronic Shoe Mount Flash - UNTESTED

Vivitar Auto Thyristor 3700 Vintage Camera Flash | Shoe Mount | Untested

Vivitar 285 HV Zoom Auto Thyristor Flash With Vari Sensor - untested for parts