I was too fast to write my original post and also failed to make it more clear and accurate.
I based my claim on the link of Frey on this and another post (which I’m tying to find). Either way, it was not accurate for me to generalise the link of Frey to the Venus 7750 as directly as I did. 
I’ll research further and revert here on what I find. Please do also share some more of any links of Frey to the Venus/Valjoux companies.
🤝