Well there was hand finishing [grinding, detailing etc.] done to these rings so you will see differences..
- But I do agree about the seam,, it looks weird.. And the rear rune,,well here are 2 photos of known good rings, a 43 and 44.
Better photos should be posted here.. Camera on 'marcro',,as much light as possible without glare.. Avoid angled shots. A engraving photo preferably the name, a birds eye view. All the runes IF possible.. These things are expensive make sure your getting what your spending your hard earned money on...