Whitead & Hoag Co unpatented celluloid pinback button badge - patent granted 21st July 1896. Badge may possibly be from very first production runs of advertising buttons ever made. Pears' Soap one of first global brands to use this type of advertising. 

Light foxing only.  No cracks or splits.  Metalwork in very good condition.  Pin in working condition.  Measures 4.5cm diameter.

Please see photos for condition and additional details