Thanks to all of you!

However, today I need a little bit advice regarding the scarf ring. WnW instrudtion tells me to do it entirely either in light blue or dark blue. And that is also the colouring which you find typically on Salmson 2-A2 models.
Now, here is a picture of the Salmson, I'm trying to rebuild:

To me the ring looks metallically shiny.
BAnd beside many pictures with dark rings, you can find also following pictures:


Now here is my interpretation (only dry fit, could be easily changed):

Does my approach make sense or is it bulshit and the ring was always completely painted, at least in a light colour?
Thanks for your advice.
Best Regards,
Rafael