I received my diamonds after 6th patrol, type VII B , 90 % realism...
21NOV39 IRON CROSS, SECOND CLASS
21NOV39 IRON CROSS, FIRST CLASS
08JAN40 KNIGHT'S CROSS
07FEB40 KNIGHT'S CROSS WITH OAK LEAVES
29MAR40 GERMAN CROSS
29MAR40 KNIGHT'S CROSS WITH OAK LEAVES AND SWORDS
02JUN40 KNIGHT'S CROSS WITH OAK LEAVES, SWORDS, AND DIAMONDS