Editor's note --The Sinclair Dinoland Waxy-Plastic Dinosaur was THE souvenir to have from the 1964 World's Fair in Queens, New York. The Editor got a Triceratops (shown below) when she was 5 years old. It cost 25 cents.
The real name for these injection-molded dinosaurs is Mold-a-rama. There were six styles of dinosaurs to buy. They are all collector's items now.
The Sinclair (oil corporation) trademark Brontosaurus with the 1964 World Fair inscription would be worth probably about $250. Indirect Hat Tip via Twitter: Plastic Sinclair Dinosaur was Souvenir!@TheWallBreakersRiding through Earth’s history, World Fair, New York, 1964 http://ow.ly/oBMaC