Dating is an estimate from www.ausreprints.com.
"The world's most famous crime-fighting team. Batman and Robin--Now in full color! All Color Batman." This advertisement includes art by Jim Aparo (from the cover of The Brave and the Bold (DC, 1955 series) 119, June 1975) and Dick Giordano (from the cover of Batman (DC, 1940 series) 263, May 1975). It also includes a small figure of Batman used as the masthead of most issues of World's Finest Comics (DC, 1941 series) between December 1968 (#181) and October-November 1970 (#197).