Our consignor believes these were used to serve in the Ebbets Field Stadium Club. We have seen a couple of these before but never ten all together! They are all NRMT except for one with a chip that can be easily restored. Each mug features a logo with the Brooklyn Dodgers' flag from 1952. Inside the red stars, in white print, it shows the championship years of '16, '20, '41, '47, and '49. What a set!