I found these on Amazon AU. Not sure if any are any good.
https://www.amazon.com.au/s?k=Zoom+e...f=nb_sb_noss_2
Here’s a review if the Tele Vue 8-24mm click-stop zoom but I doubt you’ll find one used let alone two. Note this is the only Tele Vue product that was produced by a third party (Vixen). You could search for the Vixen NLV or LV model. You need the click-stops whatever you get.
https://www.chuckhawks.com/tele_vue_click_zoom.htm