You can see them in larger views. They are blundstones (stamp on side of heel) but they are a little bit different than the Bit of Britain. There is more stiching on the Sears pair -check out the heel area and near the arch.
The classic Blundstones are the 500 model, and they are marked with a big 500 on the pull tabs. The Cuthbertson model on BofB is slightly different, not as thick through the instep so as to fit the stirrup better, and it tends to be a little more expensive than the 500. I've owned both and they were both fine for me for riding.
If you know your size --- look on Ebay. I've found great deals on Blundstones there.