Hallo to all
If we quote Hahnemann by saying: start every chronic case with the lowest potency, then we quote from the 6th edition of the organon, which is solely concerned with LM-potencies.
The last references Hahnemann made to the C-potency scale were in the book of the chronic diseases second edition, where the last part was published 1839.
At this stage he adviced and often started with the highest dynamization, which could be 30c or 200c and if repetition was needed worked his way down in the potency scale.
It is well for homeopaths propagating low c-potencies to bear in mind, that a lot of proving symptoms were brought out by the higher attenuations. Using the lower potencies would therefore limit the use to the few symptoms brought out in the provings with low potencies. As examples might suffice: Nat-m, which in the lower attenuations brought out hardly any valuable symptoms, or the symptoms listed under Wolffs reproving 1856 of thuj in a 1M potency, which turned out to be some of the most valuable ones.

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Hans Weitbrecht
Consultant Homeopath