Hiro Yamagata, Japanese, born 1948, serigraph on paper print titled Summer Olympic Games. Signed by the artist. Numbered 320 of 320. Matted and framed. Hiro Yamagata is an artist, based in Los Angeles, California. As a silkscreen artist, he is known for his use of vivid colors in his pieces. He is also known for his use of laser and hologram technology recently, and is recognized as a pioneer in the former. Sports Prints And American Art Collectibles.