Hey Ulf,
Honestly, I wouldn't use them - since I don't know them (~ this guy).
Personally I prefer KHM, I know what I am getting - for my money.
See here:
http://www.cabrio.de/en/interiors-khm/padding-panels/mercedes-benz-1/113sl/door-panel-113,-hardboard,-pair-detailFirst of all I know that KHM (Klaus-Hermann Mayer) is generally providing first class products,
second he has both different ones, early (230/250) and late (250-late/280). The latter ones have all markings for press-outs for either US or Euro doorpanel format.
The earlier ones don't have that since there are no differences between US and non-US.
They're a bit more expensive, I know...,
but nevertheless, I trust them (him) more. Only wanted to do it once - as I did.
That other guy there (Miljkovic or what his name is) doesn't distinguish between early and late and thus, you are getting the wrong/too large cut-outs for your inner door openers.
Personally, I definitely wouldn't want to have that!
Your choice.
Don't ever forget those foils behind the door cards,
or your new ones will soak up (rain) water soon again!
Ask me how I know ....
(These ones worked for me like a charm...
http://www.cabrio.de/de/notsitz/polster-verkleidung/mercedes/113sl/unterspannfolie-fuer-tuerverkleidungen-paar-detailSort of pond foil, but worked perfect in my case.)
Cheers,
Achim(Eurodoorcardaficionado)