Authorities have recovered a stolen 18-carat gold bookmark that reportedly was given to Adolf Hitler by his longtime mistress, Eva Braun. Christian Popescu, a Romanian national, was arrested Tuesday outside a Bellevue Starbucks after trying to sell the bookmark to an undercover agent for $100,000, according to papers filed in US District Court. Federal prosecutors said the bookmark was among several items taken in an auction-house heist in Madrid, Spain, six years ago. At the time, some antiquities experts questioned its authenticity. The bookmark is engraved with a portrait of Hitler as well as an imperial eagle and swastika, and its inscription indicates that Braun gave it to Hitler to console him after German forces surrendered at Stalingrad. "My Adolf, don't worry," it reads, adding that the loss was "only an inconvenience that will not break your certainty of victory. My love for you will be eternal, as our Reich will be eternal. Always yours, Eva. 3-2-43."