This postcard was sent to me from a fellow postcrosser all the way from Hamburg. Thanks Philip!
Baltrum is a barrier island off the coast of East Frisia (German: Ostfriesland), in Germany, and is a municipality in the district of Aurich, Lower Saxony. It is located in-between the chain of the seven inhabited East Frisian Islands. Baltrum is the smallest island in this chain by area and inhabitants.