Website. A few of you mentioned these - I think they are the old Hallmark 15mm League of Augsburg figures which are reviewed here.
For the 1660s and 70s I really rate the Donnington Wars of Louis XIV range in 15mm - there's not many of them but they're spot on. I've got some but I can't really photograph them properly but I recommend them - not so keen on their Late 17th range though. If anyone can photograph 15s I'd be happy to send them to you.