T206 Mathewson Sovereign 460 - rare?
 

Looking for some data/opinion on a T206 Mathewson Dark Cap. It has the Sovereign 460 back, which I believe is the least common of the Sovereigns. I just don't have a feel for how common/uncommon it is and whether it would command much of a premium. It's a solid VG card - apologies for not having a scanner. Would appreciate any thoughts.

PSA lists 26 Matty Black Caps with Sovereign backs, but they don't break it down between Sov 350s and Sov 460s.

Sgc
 

SGC explicitly lists 4 Sovereign 460 Black Cap Matty; note that there are also 5 other unclassified pose S460 Mathewsons in the pop report.

it could only be the dark cap as the portrait and white cap do not come with Sov 460.

this card will bring a premium with this back and it is a bit difficult but the dark cap comes with several backs that are a good bit more difficult than Sov 460.

So if I'm reading the SGC Pop report correctly (never have submitted with them) there are a universe of roughly 77 Sovereigns out of 1200+ Mattys with only 9 of those Sov 460s…Didn't realize that SGC grades T206s by year. Thanks for the data points.