Unknown, April 15, 2014 at 2:53 am...
I'm with you in doubting that Herrick or his earliest publishers included a smiley face in "To Fortune," but I should note that a 1648 printing of his works (from a copy at the Huntington Library) does indeed feature a colon beside an end parenthesis in this early version of "To Fortune." On the other hand, that collocation also appears on the very next page, in "To Anthea," as well as on the preceding page in a poem called "To M. Denham, on his Prospective Poem." A JPEG of "To Fortune" and "To Anthea", along with bibliographical information can be found for a week or so at
http://ow.ly/vN9oO