Looking inside an old Zenith Royal 13 pocket radio. There a 3 *Aluminum Can* transistors.
2 marked:
H421-13 6980 JAPAN,
and 1 marked 421-12.
There are also 5 of these little 3-legged stool blue glass button looking thingies marked 12112-F.
These parts sound familiar? Anything useful to a DIY stompboxer?
Kerry M