Upon further review, it appears that the 215-vs.-216 / 483-vs.-484 discrepancy at T206 Resource centers on the Fred Clarke portrait, rather than the Chance red portrait. But there's reason to wonder whether either one should be listed as having a confirmed Sov 350 (forest green) back.
On the backs checklist for Clarke portrait, T206 Resource lists Sov 350 (forest green) as confirmed:
http://bit.ly/2lBf32C
T206 Resource also lists Sov 350 (forest green) as confirmed on the Sovereign master checklist and on the T206 master spreadsheet. Note, too, that the Sovereign master checklist at the bottom says there are 484 Sovereign cards in all:
http://www.t206resource.com/Checklis...Sovereign.html
https://docs.google.com/spreadsheet/...hl=en_US#gid=0
However, for some reason the Clarke portrait is listed on the Sov 350 (forest green) checklist as a "probable no print." There are 215 cards if you exclude it and 216 if you include it. See here:
http://www.t206resource.com/Sovereig...Checklist.html
(The Clarke portrait is actually shown twice on that page: once in the "probable no print" section, and again floating sort of randomly on top of -- but not within -- the "confirmed" checklist.)
But then the mystery deepens. Neither SGC nor PSA shows a confirmed Sov 350 Clarke portrait in its population report. The same is true of the Chance red portrait, as Ted alluded to. However, T206 Resource is consistent throughout its website in its classification of the Chance red portrait as "confirmed" with a Sov 350 forest green back. (Perhaps they know something we don't.)
So is 214, or 215, or 216 the right number of Sov 350 subjects? Who knows? Now I'm curious to know how many other "confirmed" Sov 350 cards might be less confirmed than others. If anyone has either of these cards, please speak up!
Ted, do you perchance have a Sov 350 Clarke portrait?