I don't think it's a scratch, just a line in the factory finish polish that's highlighted by the direct sun. I'll brush it & post a pic later along w/ my new navy bridle leather belt from Equus.
These are from the eboutique: http://www.carmina.telemaco.es/articulo.asp?idarticulo=3857025. After seeing Namor's MTO boots I really wanted something in navy shell. I never got any response to emails about MTO possibilities, so these were a good fallback.