Are these wiper arms correct?

[Shvegel]

After sending the lower part of my wiper arms off to be re-plated I finally had a chance to put them back together today.  After looking at them a bit I noticed the blade holders are satin and the arms are chrome.  I seem to recall something about the blade holders going to satin.  I am wondering if this is correct?

[mrfatboy]

I believe blade holders and arms went to satin at vin 2890 (during the 250sl)

It’s hard to tell but your blades don’t look like Bosch blades. They look like Anco Red Dot. I used to have those also that’s why they look familiar to me.

[Shvegel]

Indeed they are Anco blades.  I just installed the inserts this morning.