Yes, the original German Agfa formula for Agfa 120 calls for both Potassium Carbonate and Potassium Sulfite. The German Agfa 123 formula is identical to Agfa 120 with the addition of Potassium Bromide and claims browner tones as a result. I would not expect the use of Sodium salts to cause a color difference.

I use "German Agfa" to distinguish from "USA Agfa" which used some of the same formula numbers with different chemistry.