Two unequal breakers in a main panel
My best guess based on the pictures provided and info:

The first panel is probably a main breaker switch that can be used to turn off the entire panel with one switch (instead of turning them all of individually). The "second panel" is a 100 amp panel. The service amperage is listed on the sticker. The two switches connected with a removable rod are most likely an attempt to make two 70 amp switches into a double slot 100 amp switch, which of course is a code violation and is just negligent.

What exactly are you trying to do? Was your only question just what type of panels are these? If there is more to this question, can you post another picture capturing the conduits and wiring going into each panel, that would give me a better idea of exactly what is going on with this strange setup.