Hardin's Miniature foliage is distinct in that it is very blue-grey and the leaves tend to roll and even droop a little. Not all minis are like that.
I've been trying to glean the answer from this thread:
http://www.tomatoville.com/showthrea...ardin%27s+mini
but it's 26 pages, and they don't mention f1 much. I'm hoping ChrisK will chime in.
Nan