(Project Blue Book, U.S. Air Force, Washington, D.C.)
Source: Fold3.com, Lindon, Utah
Quote from the document:
“Bright star-like obj in sky appearing to rotate at
estimated alt of 30,000'. Twin vapor trails. Observed several times on previous
occasions. (Page 1)
ATIC Document
108383, 25 Feb 53, Flying Saucer
Hundreds of curious Borneans today cranned their necks
to watch a bright star-like object which appeared to be rotating in the sky over
the oil town of Seria, emitting twin jets of vapour. ‘Flying Saucer,’ said the spectators
for want of a better explanation. They estimated its height at 30,000' and said
it was visible for 40 minutes. Similar phenomena have been reported over Borneo
several times recently.” (Page 2)
(ufocasebook.com image)
Satellite photo of Seria, Brunei Darussalam (tageo.com)
(tageo.com photo)