Monaco
Date of Issue: 9th May 2025
one stamp (2.10 €)
the stamp is issued in a mini-sheet of 10 stamps
The stamp depicts the Observatoire cave, where the first traces of occupation date back to between 250,000 and 20,000 years ago, alongside discoveries made on Monegasque territory since prehistoric times: a biface, a lynx skull, an amphora, gold coins and a bracelet.