Here is the list of goods prohibited by Chronopost:

• Valuable objects: timepieces, precious stones and metals, coins, securities, titles, or means of payment, debt securities or commercial instruments, gift certificates, telephone cards or the equivalent, in general any paper document or other medium allowing to make a fungible payment and/or subject to the legality of the transport of funds.
• Works of art, antiques.
• Documents: responses to calls for tenders, prequalification files in the context of awarding contracts, and copies of examinations.
• In addition for international shipments: furs and articles not imported into the destination country.