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Is the dusting on the frons too narrow for scalare?
You might be right, but dusting can be more obvious from different angles, so it's hard to be sure from one picture. Something about the jizz says scalare to me, but...
My Flickr photos...
I've found another shot of the face from a slightly different and it's brought me round to your way of thinking.
Lat/Lng: 51.3, -0.8
OS grid ref: SU9057