It is from the Meucci "MS Series" - which literally stands for "Meucci Series".
The brochure says:
The Meucci Series "theme" cues are the finest available with unsurpassed design and styling
By the way there is an interesting back-story on this line of Meucci cues:
This series was originally supposed to be the "Mike Sigel" series - and there are a small number of each model from the series with the "MIKE SIGEL" stamp on them, but I heard Mike jumped to another cue sponsor, and in the end, Mike's name was (legally) not to be used on the line of cues.
Here's the Mike Sigel version of the cue you have:
The story I read about it was told as follows (I don't know personally, nor have I confirmed this with Mike or Bob):
I was at the Red's tournaments in the early 1980's. It was probably 1982 or 83 when I saw MS playing with a Meucci. He didn't like it. He was changing shafts and looking at it like he hated it. He was playing a match with a guy called Gabby and losing. In the middle of the match MS had someone go get his Joss and he finished the match with the Joss. The reason this sticks out in my mind so much was Bob Meucci's reaction. He was really pissed and later Bob and Mike were in a corner of the room with arms flying as they had a heated conversation. Mike played the rest of the tournament with the Joss.
Could have been the start of the end of the Meucci-Sigel relationship. Who knows.
There is also a version of the Meucci MS1 cue with the red Meucci Originals logo. The red logo cues were for the European market.