WestLicht photo auctions in Vienna have some very interesting cameras coming up for sale on 22 March 2014 https://www.westlicht-auction.com/index.php?id=4&L=1
The very first Rolleiflex twin lens prototype ever made, built in 1925/26 with one focusing wheel for the viewing and taking lens (like all later Rolleiflex cameras), for 4.5x6cm plates as the 120 rollfilm wasn’t invented, in fully original condition with certificate by DHW and original patent letter no.519590
Expected to fetch 35,000 – 45,000 EUR
They also have the only Hassleblad to make it to the moon and back. There were a total of 14 cameras to be used on the moon the other 13 are still on the moon and free to anyone who wants them, “local pick up only”!
Expected to go for: 150,000 – 200,000 EUR