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The LX Supreme comes in a Rose gold finish as Standard. I have 3 sets and they're excellent regs
I'm not aware on any other Limited Edition Gold editions @JackD342 may have further info though as he's an AL specialist
There was a 70th anniversary (2013 I think) LX limited edition with a blue styling ring on the 2nd stage. Not aware of another limited edition, but could have been. What makes you say limited edition, and what does 159/500 mean? The current LUX is an LX with harder rose gold and/or pvd finish on various components. Supreme means cold water, which in the case of any Legend means lower IP setting in the 1st stage, lip guard, and a couple of snowflakes printed on the parts. I am trying to remember if LUX started out as limited, but stuck around.
Photos?
View attachment 495555
The older Legend LX with the gold that I have known, the octopus is still colored yellow having the internals exactly the same as the Titan LX. I'm not aware of a legend version having both 2nd stages in gold finish.
If you are able to, open the front of both 2nd stages and include photos showing front of diaphragm and retaining ring. No need to remove diaphragm, just purge cover.
Be careful, that 2 part purge cover ring is delicate.