Canon FD mount. a nice clean lens only light signs of use.
nice Panagor 2x Auto Teleconverter 2x Olympus OM mount
nice Soligor 2x Teleconverter Minolta Bayonet mount
nice Itorex 2X Tele converter PK Bayonet Mount
nice Hoya x2 auto tele Converter Olympus OM Mount
Sirius 2x Auto Tele Converter
Astron 2x Auto Teleconverter for Pentax P
