Can someone please advise what brand this SDM mast is and whether it will work with a NP sail? There are no markings on it besides those shown in the photo.

Tushingham masts are apparently made in Italy and are supposed to be flex top and "work" with NP sails
from what i have seen, they typically have MORE markings than that ...
NOT sure where NP masts are made ...
less n less masts n sails are flex top (and hard top too)
all are going CC - constant curve - FINALLY !!
^^ Joe that seems to be a rumour, whats your source?
Anyway most masts came out of that Italian place (name eludes me at the moment) - it could be anything
It's an italian made 100% carbon 460cm imcs 25 that is designed for windsurfing sails.
Triana..... they probably manufactured for numerous brands in different spec's , Ka was one long ago.

Another photo. Got this mast in amongst a heap of gear off a guy going to the dark side. Thought someone may have one the same but if not I'll just have to try it.

Another photo. Got this mast in amongst a heap of gear off a guy going to the dark side. Thought someone may have one the same but if not I'll just have to try it.
I've had older KA masts looking exactly the same with the blue boom area, 55 and 70 %,
Labels the same also, part of the flag pole now.