From Fandom:
The Datsun Bluebird 510 sedan, also known as the "Poor man's BMW", was one of the most popular Datsun cars ever made. Built from 1967-1973, the Datsun Bluebird 510 was also known as the Datsun 1600, Datsun 1500, Datsun 1300 and simply Datsun Bluebird. The Datsun Bluebird 510 was originally designed by the Nissan-Datsun company in Japan. The Name "Bluebird 510" was only used in Canada and the United States.
The casting was retooled twice; once in 2016 for RLC use where it gained an opening hood, and once in 2019 for the mainline where the original construction was modified for cost cutting, becoming a post-post design instead of a post-tab design.