T206 Mathewson Sovereign 460 - rare?

[Webster]

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.

[Sean]

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

[t206hound]

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

[cfc1909]

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.

[Webster]

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.