If I were you, I'd take whatever anyone says about that cue with a grain of salt unless they've see that particular cue in person.
Honestly, photos shared on the internet of cues are generally horrible (no offence to you personally). I've photographed thousands of cues over the years, and looked at hundreds of thousands of cue images. A very slight lighting difference can make parts of the cue, depending on materials, look completely different.
On top of that, when you upload photos to eBay, Craigslist, Twitter, Instagram, and Facebook, they run compression algorithms on them which severely reduce the quality of the image (to reduce file size and save space).
If you think you might have one of the few of that model cue made with actual precious metals (whether it be gold, silver, or gold-plating/silver-plating), you'll have to probably have someone look at it in person.
There must be a non-obtrusive way to test a material like that to see if it's silver, but I am not knowledgeable enough in that area to know one way or another.
On that note, I may be out of the loop on the "early rare versions" of the "lock and key" cues from Meucci, so correct me if I'm wrong—but didn't the "precious metals" versions have a "Meucci Originals" logo on a "hoppe ring" (vs. the modern Meucci logo that is on yours)? I have photos of one that was for sale by a reputable cue dealer back in 2013, and that's what it had. I've also seen HD video of a white/gold version, and it too had the "Meucci Originals" logo.
I wish you the best of luck in identifying it (one way or another) once and for all!
UPDATE: after typing all that, I just now realized that the photos in the other question you had replied to aren't yours, but rather, they're they original poster's (at first I looked quickly and thought they had been posted by you). I guess there's no point in discussing further without seeing what cue you're holding.