Olympus OM mount. a nice clean lens only light signs of use.
nice Jessop 2x Auto Teleconverter Canon FD 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
Astron 2x Auto Teleconverter for Pentax P
Panagor Auto Macro 1:3/55 mm with M42 thread and focusing distance 21.5 cm!!
