How do the Moebius and Thum Balbach electrorefining systems differ?

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The Moebius and Thum Balbach systems are both used for the electrolytic refining of doré metal, which is a mixture of silver, gold, and platinum-group metals.

The primary difference between these two techniques lies in the orientation of the electrodes within the refining tank:

Moebius system: The electrodes are disposed vertically.1
Thum Balbach system: The electrodes are disposed horizontally.1

Both methods utilize a solution of silver-copper nitrate to achieve high-purity silver, typically reaching a fineness of 99.9 percent (three-nines fine) or, in some cases, 99.99 percent (four-nines fine).1