Dividend stamps were introduced in 1965, with the Co-operative Wholesale Society (CWS) launching the national dividend stamp scheme in 1969.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/39796699@N02">The Co-op Group</a>
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/theco-operative/27380411026/">Old Divi stamp book</a>