This is a Significant Record milestone.
The aircraft was piloted by Ewald Rohlfs. The world record attempts commenced on the day before. The FAI records broken were as follows,
25 June 1937
13063, 13064, 13065, 13067, 13153
26 June 1937
13147, 13148, 13149, 13150
All the records were broken using an Fw 61 V2 (D-EKRA) except for record ID 13153, which was achieved in an Fw 61 V1.
Note: To view these records on the FAI records portal enter "Ewald Rohlfs" (without quote marks) in the search box.