Like many others, I too have a couple of etchings signed by Martin. One is titled Le Chatue, the other Le Barrage. Both have the slz logo encircled and both are signed in pencil by Martin. At the top left in small letters, Paris etching society, NY.
Does anyone out there have a solid knowledge base as to the history of these etchings and valuation? I have searched before but never on this site. Newbie at the helm.
A big hello to all, my name is"JC". Into to art. My appreciation in advance

There's a whole bunch of threads concerning SZL and the Paris Etching Society (https://www.askmehelpdesk.com/search.php?searchid=963676).
Unfortunately they aren't worth a great deal, a few hundred at most.