This is one of 2 regulators I have with the Stubbed Hookah port (unfinished port).  This one came to me as you see it.  It is obviously not Non Magnetic but it is a DA Aquamaster.  It is a satin chrome regulator, but has a shiny chrome long yoke installed.  It is in great shape and I think in some ways more rare than a Non Magnetic, but I do not know any manufacturing numbers.