I am looking for the above item. Please let me know if you have one available for sale and if so, at what price?

Thanks & best rgds

The pearl gray celluloid was not an "arco". The term "arco" refers to a process of layering thin sheets of celluloid to build up a rod that is then cut at an angle so that the layers come out looking like tree rings. I believe that the only "arco" colors were brown and green. The gray was a "marbled" color, like the blue and the red.

I underwrite this! The pearl gray differed from the other marbled colors, though, as in the rather continuous pearlescent spireally swirl that goes from top to bottom of the pen rather than the pearlescent chunks in the green, red, and blue celluloid. It's hard to photograph in its intricacy.
The pearl grey is a lovely material but, I dread, not as easy to come by anymore, at least in the Paragon shape. The OP might check out Airline International. They might have left one specimen.

The Pearl Grey will turn up on eBay from time to time. Omasfan and I traded a few messages about one that went for a mind numbing low price. I think it was $299 or $399 -- I cannot remember exactly. But I do remember wincing when the auction ended because I have the Cinema LE and paid much more for it. I believe the Cinema LE and Pearl Grey are the same celluloid. I didn't even even think to bid because it would have been a bit redundant.

To add to what everyone else has said, that material is much easier to find in its 360 incarnation. I don't know whether or not your heart is set on the Paragon, but I believe there's a Pearl Grey 360 on the Bay right now. Edit: actually, there are 5. Good luck,
David