Well, I got an email back from the address I wrote to. Here is what they said:
Dear
Concerto,
We inform you that this item has been handed in at the Lost & Found department of Amsterdam Airport Schiphol.
The reference number for the item is: XXXXXX
You, or somebody else, can pick it up, before 13-03-2009 at the baggage depot. After this date, it is NOT at the bagagedepot anymore. Then you need to contact us again for a new arrangement.
Location: Bagagedepot (between Arrivals 1 & 2, Kelderplein)
Opening hours: 8 am till 4 pm, 7 days a week.
Required:
Reference number
Valid id (of the person who collects the item)
5 Euros administration fee
It can also be send by Courierservice:
- Farjokoerier, tel.+31-72-5039822 /
www.farjo.nl (online form)
Mention the reference number, say it is with lost and found, arrange the costs for sending, they will pick it up and send it to you.
Items will be kept in storage until 90 days after registration.
Best regards,
SCHIPHOL DIENSTVERLENING BV
Lost and Found,
Amsterdam Airport Schiphol