Original vintage Soviet Russian propaganda poster.
The title translates as follows:
The blue expanse is dear to us everywhere and it is not without reason that we are talking about it. - It's time to protect the wealth of our rivers and lakes in crystal purity!
The poster shows an image of a man dressed in a traditional Russian shirt holding a vat of water. Schools of fish are playing in the water behind him.
The poster was published by the state Visual Art Publishing House "Изобразительное Искусство".