Toshiba driver transistors 2SC5171 / 2SA1930, one pair, new, unused. They are very good choice for replacement driver transistors used in Sansui amplifiers / receivers. The only one thing you should know that those Toshiba 2SC5171 / 2SA1930 transistors has completely insulated tab for fixing transistors to the heat sink, but in some Sansui amplifiers / receivers driver transistors are with metal mounting tab which is electrically connected to the collector, and Sansui used that metal mounting tab as electrical connection to the collector connection point on the board.

That is not a problem, you just need to connect collector leg of 2SC5171 / 2SA1930 to the collector connection point on the board.

Some of data from data sheet: