Postcard of a dam in Chubut. The dam is named after Florentino Ameghino a Palaentologist from Luján. On the reverse are 2 x 8 peso stamps featuring the centenary of the Welsh settlement and 1 x 4 peso stamp featuring General Jose de San Martin, all franked. There is handwriting on the reverse and an address in Royston, Herts, Great Britain. Printed on the reverse is "No. 46 Reproducción prohibida" and partially obscured "- Lizcolor - Italia 881 - Comodoro Rivadavia".