Dome port in good condition. The new price is US$718 for dome, shade and cover. US$360 including trackable post. If you want to use it on a Nauticam housing, I have an Aquatica/Nauticam adapter also for sale for $260 including post. I will not sell this hard-to-find item separately until the dome has sold. There is a blank-plug in a 15mm hole in the backplate where I had installed a manual focus control. Details of the blank-plug on request.
I compared this dome with the 8.5" Nauticam which I also have, and I could not tell them apart. I don't need both!