I opened the Single dark and the Double dark at the same time. My scores are:

Single dark -- 93.5 points

Double dark -- 94.5 points

There are 2 versions of the US 750ml 50% 12 year old 100 proof -- so-called "single dark" and "double dark". Ras Mazunga already claimed the other page as double dark, so let this page be for the "single dark" only. 

I think Wheatfield's notes belong on another  bottle page as the 50% & 57% are a little different profile wise not to mention different abv.

I think it should be here. this bottle page is for the 50% version, the 57% is the followimg link

https://www.whiskybase.com/whisky/18033/springbank-100-proof

This is the 57% version in a 70cl bottle. Medium amber pour. Nose is pungent…honeycomb, caramelized banana, caramelized pears or apples, taking it to a somewhat funky/fermented level. Freakin good. Mouth thick and very strong. Lots of alcohol heat. But tons of these rich, weird sweet flavors going on. Super heavy banana bread, rum-drizzled raisins with vanilla ice cream. Ah, the most "rum raisin" I've ever tasted in a whisky, hands down! A note in the late finish is black licorice. Just a wild, pungent, and great collage going on. With water - softer and less wild, with a nod toward the sweeter cakes, honey, and a bit of orange liqueur. This is one of the more interesting bottles I've opened recently. Drinking it some timer later, you can find cola syrup, ginger, and powdered spices too foreign to name.

A superb whisky.