Earliest Reported Use
17 Feb 1903
Esch-sur-Alzette I
to Homberg, Germany
18 February 1903
Very Fine Private Cachet
Victor Bettendorf
Esch s/Alzette
Grand Duché de Luxembourg
Sometimes we discard common postal cards in below average condition, but first we should check to see if they contain secrets, such as the earliest reported use date. This card nearly ended up in my trash bin until I noticed that the FSPL Handbook (2009) lists 17 March 1903 as the Frühdatum. This card was used 29 days earlier.
If you have an earlier use, please send me a scan at Arsdorf@gmail.com . I'll publish it here for everybody to enjoy!