The picture shows a view of this Old Nestle Boycott Advertising Pin Back Button. This pin back button is not dated but it is believed to be from the 1970s or 1980s. It is in red and black on a white back ground with a simple design of a slash through the company name. There is a union mark on the edge and the back is blank. It is marked as follows:
BOYCOTT NESTLE BOYCOTT
The pinback button measures 2-3/16'' wide. It appears to be in near mint to mint condition as pictured.