The problem I had in the sixties was making satisfactory copies (or duplicates) of our slides (or transparencies). There is an art to it which I never mastered. I’d use daylight film instead of tugsten and the colors would also be excessively blue.
Plus the magazine printers in Australia were almost destroying our originals after even a single use. It was as though they were putting the transparencies on the floor and twisting their shoes over them. All came back ruined.
Maybe it was intended to give their employed photographers future work? Publishers were tougher people then.
Sending precious original transparencies to overseas photo competitions was also a risk. Nikon seemed more reputable than most and they were. I only entered a couple of competitions for fear of losing material. The 1971 Nikon bronze medal was not for the above picture. It was for a 135mm lens shot of some native kids in a canoe in New Guinea, with late afternoon side lighting.
Photo competitions are great for most people, it depends upon who the judges are and what skill or photographic eye they might have, or not have.
**To be fair on all, entries must be judged in secret – without the photographer being known by name and reputation. Only then do you have a true competition.**