I had a BFR Valentine and I didn't notice any significant difference as opposed to my other MM gits. I agree with St_G that its likely oil and wax unless otherwise noted.
I have two BFRs, an Axis (birdseye maple neck) and a Sabre (all rosewood neck). The Axis has a thin satin poly, while the Sabre has the oil/wax treatment. I've seen some that have gloss finish. So, what they use on the neck can vary depending on the model.
From the look of the photos, I'd say you have satin poly.