The Eaton company began in Utica, New York around 1865 and existed under various names until it was closed in 1882. Stamps were first issued in May of 1866 and last in February 1883, which does not seem correct if the firm closed in 1882. 20,864,970 were issued on old paper, 36,203,136 on silk paper, and 45,089,847 on pink and watermarked papers. A number of watermarked copies were rouletted.
The perforated copy above was printed on watermarked paper.