This is a unique piece of art.  It is an engraving on a .25" manmade plaster or resin or cultured marble.  It is large approximately 15 5/8" x 24 1/4" Made in 1977 by "World Landmarks Ltd"

The subject here is New York, New York.

The artist is signed E. Rouble.  

There are two small chips in the upper right and left corners, but these would be covered by a frame.

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