PCL Padres Home Jersey - Navy (1952) - 4XL - Royal Retros

San Diego Padres Jersey History: Pacific Coast League

Uni Watch - The best throwback uniform for each MLB team - ESPN

History: Sometimes baseball experiments take root (as in the DH), and sometimes they fail to gain traction. In the latter category was Denver's strike zone uniform, which made its debut against Omaha in August, 1952. Or perhaps they were responding to the quality of umpiring in the Western League by being helpful.