From the photo of the eBay listing, it was hard to tell whether the Barnes had a sharp helix or not. But, with the buy it now attached to it, I didn’t really have time to confirm or deny. Well, as luck would have it it is lovely, although it isn’t marked. The other plus, is that it isn’t one of those formerly double helix Barnes, who at some point lost it’s other helix. That said, I am really really really wanting a double helix version–marked preferably. The new arrival is pictured below, as is the Clough with brush that I found at Brimfield.