How Many Xbox 360 Halo 3 Editions Were Made? (No Official Numbers)

It's impossible to know the exact number of Xbox 360 Halo 3 Editions produced.

Microsoft does not publicly release production numbers for limited edition consoles. However, they were fairly widely available at launch and not a truly limited run, unlike some later special edition consoles.

If you are looking for a specific number, you would have to find information from Microsoft directly, but it's unlikely they would release that kind of data.