Switzerland reported irregular observation — September 1953

On or during September 1953, at or near Switzerland, the source reports the following sequence: TYPE OF OBSERVATION: Luminous object observed in the sky. DIRECTION OF TRAVEL: The spacecraft flew from north to south. LENGTH OF TIME OBSERVED: The flight of 45° lasted only four (4) seconds. REMARKS: (General description of what you saw - use back if necessary) When it disappeared on the horizon, it required a seventh of a second to completely disappear.