Maximum # Of Drops

[Weapon]

This is kind of a mechanics question. If someone could even reply with a link to a place where they explain the inner workings of the game, I'd be satisfied :S

I've heard that (augmented with gears that produce items on killing a monster, like cake hat or bee wings) once a mob reaches a certain number of possible drops, they'll start removing items off the list of things you can get from them, as there's a limit of potential drops you can receive on killing a monster.

Is this true, and if so, what is the maximum number of potential drops?

Hope this is clear enough :T