Unfortunately, the visual/aesthetic flaw with the sec at 9:00 Daytonas (i.e. the 16520, 16523, 16528, 16518, etc, etc) is the subdial spacing. These are replicas of the Daytonas using the 4030 movement, aka the El Primero 400. The subdial spacing should look like these:
There are some other 'tells' as well, like the position of the pushers relative to the crown, etc. But all in all, still a nice looking watch. If you like Daytonas, but don't want to spend $3k+ on a franken, the seconds at 9:00 7750/3 model is probably your best option for a modern... Even with the subdial spacing off. It will be much more reliable than the 116520 (and variations) model....