The 275 would be a suspect but you need to get the VMI to find out for sure. I thought all 124s were creme beige rather than parchment but once saw a window sticker on a 94 E320 coupe that said parchment - so it's pretty much all messed up. Why they made two colors so close together is a mystery.

PS - just checked the plate on my 92 400E, which is also smoke silver 702. My car says 265, which I know from my VMI to be the upholstery code, in exactly the same place that yours says 275 - which means one of us has parchment and the other creme beige - but which is which I don't know. Someone must have the codes.