So that card brought $3680 in the Sterling Auction. To me, that was a strong price for it in that grade (AUT). And I don't think the seller is doing anything really bad but that is just some asking price.....
Here are a few others with different backs but still similar-
Tharps-
http://www.ebay.com/itm/1928-Tharps-...item1e7473a802
and a Harringtons
http://www.ebay.com/itm/1928-Tharps-...item1e7473a802
.