Rear view Mirror Gokf Mk1 Cabriolet

Hi I am looking for an original rear view mirror for my Golf Mk1 cabriolet GTI 1988

Can anyone advise / supply 
Or send me a photo of what it looks like 
I've seen one online but it looks like there needs to be a bracket to hold it 
There is nothing at all on my windscreen or did they attach to the top of windscreen ?? 
Any help appreciated or eBay links etc 

Hi mate they attach to metal disc…..which  you glue to the screen.  I have 1 mirror with disc.. i can post  tomorrow… on the for sale section i think i put pictures last summer

I can take better photos tomorrow. Of the disc ,glass is very good..