How many pictures does the "image history" show for a persons icon?

Suggestion: Since the picture is still on the server and already approved, I suggest that there be an easy way to "select" one of your old icons rather then having to upload the image again. For example, after maybe putting a seasonal "Halloween" picture up, it would be easy to go back with a simple click to your old icon.

of course saying that, there should probable be a limit on how many icons the server will hold or you know you will get the person who will upload 30+ icons for them to keep choosing a new one each day of the month. (maybe a limit of 5 or 10) [10 icons since they are small, 5 big pics since they are bigger]