Vivitar 3900 Auto Thyristor and Remote Sensor Flash Untested

Vivitar 3900 Auto Thyristor Tested Working With Mount

Vivitar 283 Auto Thyristor Shoe Mount Vintage Camera Flash Untested

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

VIVITAR Auto Thyristor 283 FLASH AUTO THYRISTOR Sensor Photo Flash Equipment

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

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

Vivitar 283 Auto Thyristor Electronic Shoe Mount Flash - UNTESTED