Cool! So do I, from 1969, in my high school electronics class and it still works too. It's for a variable audio oscillator that rises and is re-set by a micro

Cool! So do I, from 1969, in my high school electronics class and it still works too. It's for a variable audio oscillator that rises and is re-set by a micro switch. I tuned it with a precision trim pot, to sound "like" a then new, electronic Police Siren, it was a big hit at school with all the guys. Unfortunately, I used the case from my first Transistor Radio, which was an xmas present in 1962, a beautiful red and creme, Jupiter, 6 transistor radio, I regret cannibalizing it for the case, to this day. Cream and white one here: https://www.radiomuseum.org/r/jupiter_6_transistor.html https://www.radiomuseum.org/r/jupiter_6_transistor.html