Chairman Mao had boundless trust in Chairman Hua, the army and the people of the whole nation wholeheartedly supports Chairman Hua

毛主席无限信任华主席,全国军民衷心拥护华主席
Mao zhuxi wuxian xinren Hua zhuxi, quanguo junmin zhongxin yonghu Hua zhuxi
Chairman Mao had boundless trust in Chairman Hua, the army and the people of the whole nation wholeheartedly supports Chairman Hua
1976
Publisher unknown
72.5x53 cm.
BG E13/953

The slogan on the banner reads "Chairman Mao's handwritten instruction to Comrade Hua Guofeng: With you in charge, I am at ease". In the background are the Collected Works of Marx and Engels, the Collected Works of Lenin, and two volumes of the Selected Works of Mao Zedong.

Although the poster is undated, it has been published (immediately?) after September 1976.