HIT OF THE WEEK was a US record label introduced in 1930 and discontinued in 1932. Distinctively, Hit of the Week records were not made of the heavy, fragile shellac compound which was usual for phonograph records of that era, but of a patented flexible synthetic resin named Durium coated on a brown paper base. Like most popular-music 78 rpm records, they were approximately ten inches (25 cm) in diameter. Related products were introduced abroad, notably in the UK under the Durium label imprint. Some special-label custom records and small advertising records were produced by the same manufacturers.
To learn more about these recordings and where you could find them back in the 1930s check out the RSA blog post, Hit of the Week (1930-32)