My Henri Jourdain etching is entitled "The Old Farm" dated 1919. I'd like to know more about it and it's worth. In fine print on one top corner it says Publepar L'Estampe Moderne, 12 Rue, Godot De Maurot, Paris 1919. The other side gives a copyright dates of 1919 by someone in Milwaukee. There is a number 66 in lower left corner and it appears to have been signed by Henri Jourdain. Please advise.