Vintage Sanford's Ink bottle clear glass 2 1/2" tall.
Bold embossed Sanford's 27-6 on bottom
According to Wikipedia, Sanford Ink Company of Chicago “was founded in 1857 by Frederick W. Redington and William H. Sanford, Jr. in Massachusetts as the Sanford Manufacturing Company. The company moved to Chicago in 1866 – five years before the Great Chicago Fire destroyed Sanford's Chicago location.