Excellent estate find:  Vintage Original 1982 Limited Edition Poster Signed by Listed Puerto Rican Printmaker and Painter, DENNIS MARIO RIVERA!  "XV CONGRESO LATINOAMERICANO DE QUIMICA."  Numbered by the artist "141/200."  He adds "serigrafia Rio Piedras PR."  Poster was a gift given to conference attendees.  THIS IS NOT A COPY OR REPRINT.  Professionally mounted on foam core.  Bright and clean. Fanciful imagery of laboratory equipment and vegetation.  Please examine images closely (they are the best descriptions) and CHECK OUR FEEDBACK:  2,171 items sold, 100% Positive Feedback.  Buy with total confidence.  Packed carefully and shipped promptly.  A fine addition to any collection.  Your interest is appreciated!  Please visit our eBay Store, SRB Curated Collectibles;  we gladly combine shipping.