Beautiful certificate from the Aeriatron Company issued in 1891. This historic document has an ornate border around it with a vignette of an eagle. This item has the original signatures of the Company's President, R. Bruce WIlliamson and Secretary, and is over 124 years old.
The Aeriatron Company made the "Aeriatron", a new invention "cooling, moistening and purifying the air we breath." as reported in 1891. History from Wikipedia and OldCompany.com (old stock certificate research service)