This is my first time to write in this forum.
The reason of writing first time is that, I did not own any vintage IWC until now. This is my first vintage IWC watch and I am happy to share what I recently acquired.
I am lucky (or maybe unlucky as piggie bank was broken) enough to have a chance to buy this Yacht Club R811 with green colour and matching date wheel. I suspect this is a lapis dial or marble as other mentioned. But for sure this was produced in very limited pieces (as I cannot find a lot other information online).
There is another blue one that was surfaced. Wonder how many other variations are available.
This is my photo and for sharing accordingly. Have a good week.