I did as you suggested before I posted, but after reading the first five pages of threads, i gave up, any chance we could sort out the search engine . There is a lot of info about tyres but nothing i could find about what alloys look like.
Happy to admit I might have overlooked something, but thought I'd ask to see if someone could remember a post and point me in the right direction.
They are called Toliman. Available in 220/211/208/170 series guises. Possibly the worst looking alloy wheel ever made by Mercedes. I was offered 10 sets some time ago for peanuts and declined. email if you'd like the details.