'Also, I read in Spink that there is a 10 leaf and 11 leaf wreath version. Am I correct in saying its the 10 leaf version?'
It is the 10 leaf variety. The extra leaf where present is found behind the bottom leaf at the back of the head. An easier way to tell is to look at the end of the tie ribbon. The 10 leaf points down at the end whilst the 11 points out horizontally.
Ideally you should get a copy of Peck where the above info is listed along with about 700 pages of additional material. Although out of print since 1970, it has never been revamped or superseded as there is not a lot to add. It is the only volume covering English base metal coinage from Elizabeth I through to Elizabeth II. At a typical price of £100-130 in decent used condition, it is still good value for money and a 'should buy' item. Get the second edition (1964) or the lithographic reprint (1970). Peck also wrote a small adddendum in the 1967 BNJ.