

Từ 1,50 €. Miễn phí tại Pháp từ 40 €.
Advertising postcard for the VRN CO₂-Sparbuch, featuring a blue train and a frog in a suit. The front invites the viewer to win prizes via www.vrn.de. The reverse details the campaign for sharing and environmental protection with the BUND, mentioning bikes to win and information available on the website. A 14-cent postage stamp is visible at the bottom right.