Our friends at Sports Car Digest present their rundown of Porsche collectible auto sales from the major prestigious auctions around the world. Auction Editor Rick Carey was busy traveling the globe in 2015 to give Sports Car Digest readers the realities of some of the automobiles that circulate throughout the auction world. Visiting dozens of sales, Carey surveyed a glimpse of Porsche’s greatest moments, as legends like the RS60 Spyder, 904, 906, 911 RSR and 956 crossed the auction block. Listed in chronological order, Rick Carey’s reports on the 94 Porsches analyzed for 2015. If you follow the collectors market, click here and enjoy!