I searched for new MB mats for my 126 and found none. I ended up with copies from an e-Bay company vendor. The fabric is good enough but I could not fathom why they couldn't be bothered to get the shape exactly right so that they fitted properly, and I suspect most or all copies are the same -- sloppy manufacturing, for want of a bit more care with measurements and templates.
Hi
I can supply Cream/beige overmats for your w126 in original ribbed nylon or velours manufactured to order in Germany- there are a few colour choices. I just took a pattern last week for the w126.