Good catch, Tim. We often find that some of the small changes in model years did not take place until partway through the model year. On the same topic of emblems, officially, in 1952 Chevy dropped the series number and just used the Chevrolet badge. However, when I was putting this page together, I had emails from several folks who had late 1951 trucks that were bone-stock original that had just the Chevrolet badge and no holes for the series number.