If it's a Pattern 23, it's a Strand. If it isn't a Strand, it isn't a Pattern 23. Simple as that! You wouldn't have seen a Pattern 23 with Furse on the back, because Furse didn't make the Pattern 23.
Furse did make a not-particularly-good 500w profile that borrowed (stole?) a lot of design cues from the Patt.23 - but there were several differences (including the fact that it was nowhere near as good!

). I believe Furse did use the name Major for some of their lanterns, so I'm guessing that's what you have.
A Pattern 23 :

NOT a Pattern 23 (Furse 'copy') :
