Here are examples of pictures. The picture with one led on the global button is from the Sequential product page.
The first image seems to be from a prototype unit. Here's how the Prophet-6 always used to look like ever since it was shipped:
And here's the full picture from which you extracted the program buttons section:
Notice the many differences on the front panel. The labeling and measurements of the single modules differ at times, there are way fewer and differently named global settings and less parameter options (no AMP as mod destination in the LFO section yet, only half the clock divisions).