Sanford's Penit Fountain Pen Ink Bottle with lid. This is a vintage jar that used to have peacock blue ink in it for fountain pens. It is now empty with residue of the ink inside. The lid on the bottle is very tight and I did not try very hard to remove it. There is a rust spot on the lid and a small dent. The bottle is square shaped with a diamond cut pattern on it. There are no chips or cracks in the glass that I can see, but I cannot guarantee what the glass is like under the lid.