[M1903A1]

I remember Kodachrome processing could have its issues too...some of my friends, showing slides from the late 50s or early 60s, spoke of a period when their slides came back (from the Kodak plant, no less) looking dirty, like something had gone wrong in the development process. The images were fine, but they looked like they had dirt all over them. (And these were guys who were meticulous about storage and keeping their slides clean.)

They referred to slides from that era as "Cruddy-chromes".