https://www.sothebys.com/en/auctions/ecatalogue/2014/contemporary-art-day-sale-n09222/lot.106.html
otto piene
https://www.phillips.com/detail/otto-piene/UK010518/148
Discover Otto Piene's Ohne Titel featured in Phillips' 20th Century & Contemporary Art Day Sale Auction in London. Browse, bid, and explore art, design, and...
otto pienecontemporary artcenturydaysale