Most of them have the windmill blindstamp in the lower left. As this stamp was created in mid-1924, earlier etchings cannot possibly have this stamp. Some etchings produced after 1924 do not have a blindstamp. It is usually assumed that these were made for sale in France and not for export. If you wish more specific information, please contact me directly.
Shipping is available worldwide at additional cost.
In addition to Louis Icart, I maintain a small inventory of etchings by Maurice Milliere. He was a contemporary of Icart and did beautiful work. He is not as well known as Icart and therefore his works can be obtained for less. Click on this Milliere link to see photos with descriptions and prices of the etchings that I have available at the moment. Original oil paintings by Louis Icart are also available.