I cannot decifer the signature either. I will say that odds are 90+% these were made in U.S. during the late 60s, early 70s. These laminated plate glass pieces, mostly sculptures were being made by individual artists...not art glass studios so finding the artist that produced it may be a very difficult task. The movement did not catch on...that I can tell you & I run across pieces like this from time to time which as loosely called post-modern & most of them are frankly not at all expensive & just set around unsold. They are however very heavy as the plate glass pieces used are usually 1/4" to 1/2" thick. Sorry I know its not what you were looking for.