Thank you for the Information about the CPU. Then, the 4 MHz are correct of course.

Regarding the Information about Chafitz/Sandy: There is a little more information about at the chessprogramming Wiki: "The La Regence was a commercial flop in France - in 1983 Ries' company went into liquidation and some of the remaining stocks could find their way to the Market, distributed by Sandy Electronic, the German company in the dedicated chess computer market otherwise associated with trading Applied Concepts aka Chafitz computers under their own brand."

That means that "Sandy La Regence" is OK because they sold it with this name.

https://www.chessprogramming.org/La_...B_4_La_Regence

See also the photos here: https://www.schachcomputer-online-mu...-4-la-regence/

You can see that the board is labeled:
La Regence
TSB 4
Sandy Electronics

I don't know if Chafitz also sold the LaRegence under their own name, but I doubt it. I didn't find any information about it.

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