Along with my own negs I decided to test print from a vintage glass negative when I was salt printing. The neg is 4x5 inches. I don't know anything about its history; looks late 19th century and taken in the USA as that is where I bought it from. The white blotchy marks (on the dresses for example) are from stuff stuck on the emulsion side of the neg. I don't want to attempt cleaning it as I have seen old emulsions come off when washed.