Large date. Look here; http://lincolncentresource.com/smalldates/1960smalldate.html. They have some nice pictures of the dates. I find it easiest to look at the "0".
Check out www.coppercoins.com Not only photos of both but explanations on how to tell the difference.
The '1' in the small date seems to always be higher compared to the '9' than the large date. That's the easiest diagnostic for my old eyes to see. lol
I tell by looking at the 6 and nothing else. The upper part of the 6 is way, way longer on a large date. I can spot the small date 60 and 70 in less than a second.