While my interest in circumcision started when I was young and growing up in the uk when less and less boys were being cut as babies most English circumcisions looked very similar and usually on the looser side with some skin bunched up behind the Corona and a uniform pale while skin colour so I really didn't see or pay much attention to the circumcision scar back then.
With the advent of easy access to porn, in particular American porn almost universally featuring circumcised men I started to notice three things.
1, these guys all had much tighter circumcisions than I had seen in the uk, even flaccid the skin on the shaft seemed to be wrinkle free and smooth, erect it looked to be stretched pretty tight, something I came to like the look of.
2. Many, but not all seemed to be sporting a rather prominent, dark and circular circumcision scar around the shaft, often about an inch back from the glans.
3. As many of these actors were from ethnically diverse groups, not just white, Anglo Saxon heritage they often exhibited a strong skin colour change either side of their circumcision scar.
With my moving out to live in Australia I soon noticed that most Australian men had very similar style circumcisions to those I saw in American porn.
Whenever I see a guys cock I always want to know firstly if he's circumcised, how tightly and lastly what and where is his scar.