I have seen this bottle with a label (which has a red background) - contents were for treating bird lice.
Your bottle is aqua, it does not have a pontil mark and dates from the late 19th century.
Hard to tell from photos but it seems like it might have a bruise near the base and possible some roughness at the mouth - this would, if true, definitely affect value.
My gut reaction (not knowing the bottle specifically) was that it might be worth in the $25 range, although I found a reference in Michael Pollak's book (book shown in sidebar on forum) that it has a value in the $75-100 range. I thought that sounded kind of high.
The bottle is probably listed in the Baltimore Bottles book - see http://www.baltimorebottleclub.org/book.htm and if you happen to live near Baltimore and could attend the Baltimore show, I would recommend doing so! It is coming up soon - March 1 and 2, 2014.