I'm not aware of a Swift bag with the model name "Motherload" like in the subject line -OR- "Motherloaf" like in the text of the post. I am aware of a model called the "Sugarloaf", and it fits in a Wald 139, and I have one of those that I may be able to part with, because it would help finance a more matched ensemble of Swift bags.
Is the Sugarloaf what you want? Mine is teal in color.
Bill Lindsay
El Cerrito, CA