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Vivitar 2800-D Auto Thyristor Flashgun Flash -

SUNPAK AUTO 26DX THYRISTOR DEDICATED SWIVEL BOUNCE FLASH VINTAGE UNTESTED

Filmmakers Camera Sunpak 3600 AutoZoom Thyristor Flash Light and extras

Vivitar Zoom Thyristor 3500 Hot Shoe SLR Camera Flash Untested

Vintage Sunpak 3600 Auto Zoom Flash Thyristor