You can tell what it is from the frame number, along with some other hints. 531 and better frames were made by SBU (later Special Products), 501 and down by the 'normal' factory. Sheldon Brown's website is your friend.
Raleigh never sold an off-the-shelf 753 framed bike - just the framesets and custom builds (excluding a few Team Professionals at the end of the 70's).
High end Raleighs had Campag or Gipiemme droputs - this will be stamped on them. Also the fork steerer should say what it is on there somewhere.
My gut instinct is it's not 753. The sticker is of the wrong period - at the time Raleigh were making bikes from 753 the Reynolds sticker would have said "753r" (for race) not just 753. Do a search on eBay for 753 sticker and see how many are available for 99p. At the time this type of sticker was in use Raleigh made 531 & 653 framesets and then the Dynatechs were the next up in the line. They'd have made one as a special but people who wanted something bespoke and expensive would by then be trotting off to see Mr Roberts, not trying to persuade Raleigh to build a one-off.
If you like it though - keep it and ride it. a sticker's just a sticker.
Raleigh Ozark (1987)
M-Trax Ti-1000 (1995)
Dynatech Roadie (1996)