Need help with history of truck

[bulletracer2]

I bought an apache 3dr crewcab with a suicide door 8ft longbox stepside
This truck has no vin that I can find i would assume its at least 1958 dual headlights the metalwork on the roof is too perfect
To be seamed together. Meaning it's not a hack!!!

Now I know about the Orville crewcabs but they have 6ft atepside three st with regular doors
The hinges aren't a add-on modification as well this truck had been in the scrap yard since the 60s could it have been the prototype or something I can't find anything like it anywhere
Is it a one of??