Stiga NCT not showing?

[greenbeanmachine]

I have a question about the NCT sealing that Stiga uses on some of their blades (including the Rosewood blades). I bought a Rosewood V blade from TT11 and I was kind of confused that the NCT didn't show -- usually when I see photos of it, it's very clear where the blade was sealed, because it's only sealed on the face and not on the wings. For example, this is the photo on the Megaspin store:

and here is a photo of my Rosewood V blade:

I didn't think that this was too strange, but I recently bought a Rosewood XO. The NCT sealing is VERY visible, and it feels very slick:

Does anyone know anything about this? I am quite sure that the Rosewood V is authentic, since I bought it from TT11. Did they change the NCT sealing in a newer model or something?

 

[Scarfed Garchomp]

I'm pretty sure they changed it a while back due to customers having trouble gluing rubbers to it. Thinner treatment yields better adhesion

 

[Tiz]

Yes they reduced the amount of sealing with the second "version", lenses are also different, they went from plastic to metal. I have a Rosewood VII first version and I struggled with boosted Chinese rubbers, they just wouldn't adhere especially along the edges. Usually I had no problems with unboosted rubbers. Mine has plastic lenses.