disraeligears.co.uk/Site/Huret_Derailleurs_-_Speedometers_-_June_1984_page_6. html
I can't post links or photos yet but I found this catalog with both my original derailleurs
and this expired ebay listing photo picclickimg.com/d/l400/pict/382536194806_/ SACHS-HURET-RIVAL-1980s-TRIPLE-FRONT-DERAILLEUR.jpg
Lets see if it will let it through the filters without the www in front