This cue is from the early-mid 1990s.
It would be either a:
- Meucci C-6 from the Meucci Classic series (Circa 1993-1994)
- Meucci 95-29 from the Meucci 95 series (Circa 1995-1996)
Folks often call it the "Meucci lock and key cue". The design originated in several older Meucci Originals series. The ones above are a remake of that original design (but do differ slightly from the originals designs, and are worth a lot less).
The Meucci C-6 and Meucci 95-29 cues are the same in pretty much every way, including value. It's the same design, just carried on in subsequent series.
If yours has a raised key inlay as you mentioned, it would either be a flaw or damage caused by aging. Not by design.
You'll see them selling for anywhere between $200 and $500 depending on location, condition, and number of straight matching shafts.
$500 would be in "brand new" condition with zero flaws or scuffs.
Yours is scuffed a good deal, and the black in the butt sleeve seems faded quite a bit. A collector would want to restore it. You might get $300 on a good day.
Again, most collectors will be looking for the older "Meucci Originals" version.