I truly can't say
@Cruiser ! The twig taper does vibe like it, but the foliage isn't as glaucous blue as I know watereri. Of course that blue hue is influenced by a lot of factors, but it seems to be stable in my own watereri trees. I've taken scots out of the woods that turned lush green, watereri doesn't do that. Compared to regular scots pines, my watereri has flatter and wider needles. But this too can be influenced by all kind of factors.
In real life, I
think I could tell by looking at it. But pictures are difficult. For what it's worth, I don't think it's a watereri. Compare the growth habit of a single shoot with the picture Nishant posted. There's a lot of difference in needle distance, needle width, color and old-needle-scar-pattern (which in watereri looks an awfull lot like mugo or nigra). I think it's safe to assume you have a solid aged scots pine.
Great specimen! Lovely tree.