Thank you Albrecht! The Nebra Sky Disc is shown on cachet, 2008 stamp, and in outline, as the FD cancellation. The Disc, bronze daggers, and chisels were on the antiquities market, as it was unlicensed metal detectorists who found the items in 1999 at Mittelberg (central hill) in the barrow-famous Ziegleroda Forest. Through associated dating, it is likely from the Unetice Culture, c.1600 BCE.
Thank you Sandra! Postcard of the Nebra Sky Disc, with the brillant gold spectacular against the bronze.