The index page for the 1954 French flap section of this site is here.
Reference number for this case: 14-Oct-54-Trévillers. Thank you for including this reference number in any correspondence with me regarding this case.
[Ref. 711] JEAN SIDER:
French ufologist and author Jean Sider learned in an article from the newspaper Le Comtois, of Besancon, published on October 18, 1954 on page 2, that on October 14, 1954 at 11 o'clock in the morning, in Trévillers in the Doubs, Bernard Emile, farmer, was busy plowing a patch of land near the locality Le Crépon, when he heard a whistle comparable with that of a jet, which was followed of a similar noise to a deafened shot.
At once, he saw rising in the sky a circle of luminous smoke, shining of various colors, which disappeared quickly.
Having returned on the spot of the appearance with people who had also perceived the noise, he did not discover anything abnormal. "Was that about a flying saucer or fall of an aerolite? The mystery remains whole."
Not looked for yet. Possible fireworks.
(These keywords are only to help queries and are not implying anything.)
Trévillers, Doubs, whistle, detonation, ascencion, colors, dissipation, smoke, luminous, day, circle, Bernard Emile, multiple
[-] indicates sources which I have not yet checked.