Nice little set worth a bit of effort but as Nuvistor says its full of Tin Whiskered AF117's /OC170's
https://www.radiomuseum.org/r/sobell_transistor.html
Do a search on Tin Whiskers or AF117's
The service Data is available here:
https://www.service-data.com/product...62/4884/m15862
Cheers
Mike T