 Complete the following phrase:  In 1974, he rented a shop into which he placed his Nazi memorabilia. The outlet also became the venue for late-night drinking sessions with friends and fellow collectors, including Wolfgang Schulze, a resident of the US, who became Kujaus American agent. Kujau soon began to raise the value of items in his shop by forging additional authentication details, including for a genuine First World War helmet, worth a few marks, for which Kujau forged a note saying it had been Hitlers, worn in 