Friedrich Hundertwasser was an Austrian artist known for his vibrant, colorful, and unconventional style, as well as his passion for environmental conservation. Conservation Week 1974 in New Zealand likely refers to an event or initiative dedicated to raising awareness about environmental conservation in New Zealand during that year. The artwork you're describing, an offset lithograph with metal measuring 84x60 cm, suggests that it was likely created as a promotional or commemorative piece for Conservation Week in 1974. Offset lithography is a printing technique widely used for mass production of artworks, posters, and other printed materials, while the addition of metal could indicate some form of mixed-media element incorporated into the piece. Hundertwasser's art often features organic shapes, bold colors, and irregular patterns, reflecting his deep connection to nature and his advocacy for environmental preservation. If this artwork follows his typical style, it likely features vibrant colors, intricate details, and perhaps elements related to nature and environmental themes. It's worth noting that there are visible damages on the poster; however, when framed, these damages are not prominent. This is important to consider when assessing the condition and value of the poster.