Olympus Quick Auto 310 TTL Flash Unit

Olympus OM T20 - TTL Auto Flash for Olympus Film Cameras - For Spares or Repair

Olympus Quick Auto 310 Blitzgerät TTL Blitz Flash shoe 2 only

Olympus T20 Shoe Mount Flash - Untested

OLYMPUS OM QUICK AUTO 310 FLASH WITH INSTRUCTIONS FOR OM-1 OM-2 CAMERAS (EXC)

Mini Flash Sync Port Fill Light Speedlite for Olympus 35 Series TRIP35 Pen EE sq

Godox Lux Master Retro Camera Flash Portable for Canon Sony Nikon Fuji Olympus L

Olympus OM2 Electronic Flash TTL Auto Cord Shoe 2 * OM-2 Camera & Auto 310 Flash