You had the 300-in-one kit?! I had one of the much older Radio Shack kits, and have many fond memories of those spring terminals. It looked a lot like this 160

You had the 300-in-one kit?! I had one of the much older Radio Shack kits, and have many fond memories of those spring terminals. It looked a lot like this 160-in-one: https://medium.com/@rxseger/electronic-project-kits-hands-on-with-a-vintage-160-in-1-eea39e6193f4 https://medium.com/@rxseger/electronic-project-kits-hands-on... http://www.zpag.net/Electroniques/Kit/160_manual.pdf http://www.zpag.net/Electroniques/Kit/160_manual.pdf But that lists a date of 1982. I am sure mine was many years before that. Of course it could have been in production long before 1982 - the kit definitely doesn't have an "80s" look.