Very rare GENUINE NEW (Never Used) Toshiba MOS FET 2SK405 and 2SJ115 TO-3P (one pair). Those transistors you can find at many Sansui premium class amplifiers like SANSUI B-2105 MOS VINTAGE, Sansui B-2103 MOS VINTAGE, Sansui AU-α607 MOS Premium, Sansui AU-α907Limited, AU1111MOS V and other...
Maybe it is the last chance to get never used NOS output transistors for yours premium amplifier. Be careful, on the net you can find so much fake those Toshiba FET transistors because they are out of production more than 15 years! Genuine Toshiba 2SK405 and 2SJ115 must have Vgs OFF classification on the body of transistors ("O" or "Y")!
Test transistors before soldering, please. I will not accept any kind of complaints on soldered electronic component!!