There are many difficult Sweet Caporal Combo's. Some are not mentioned because it would then raise the price and make them more difficult to purchase under the radar. Similar to the Nichols Batting with a Polar Bear back. I was buying them raw for $25 for many years and then one day Ted and I had a conversation about the rarity of them, here on Net54, and then the prices went crazy. I was selling my $25 cards for $300-$400.
There were already some nice rarities mentioned. There's a decent group of the 350 Factory 25's, and a few of the 460-25's that are more difficult than others. The PSA population report will give you a decent idea of what's more rare but it's not perfect. They didn't start counting Factory numbers until a few years ago. Plus you can't tell at all what SGC cards are 25's. Then you have all the raw cards still out there.
Here is my complete set of 28 Sweet Caporal 350-460 Factory 30 "Group B No Prints"
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Ron - Uncle Nacki
T206 Master Monster Front/Back Set Collector - www.youtube.com/unclenacki
T206 Basic "The Monster" Set
514/524
T206 Advanced "Master Monster" Front/Back Set
????/5258
COMPLETE T206 BACK SUBSETS
Old Mill Southern Leagues - Black Ink
48/48
Sweet Caporal 350-460 Factory 30 Full Color "No Prints"
28/28
NEAR COMPLETE T206 BACK SUBSETS
Polar Bear
245/250
Sovereign 460
50/52
Sweet Caporal 150 Factory 649 Overprint
31/34
Piedmont 350 "Elite 11"
9/11