Matsume, you were correct - before it was shut down the character selection screen of 1.0 would indeed show the Legacy symbol if you had such status, as shown below:



I wonder if ARR will be also show Legacy status on it's character select screen - ah well, no biggie if it isn't. In any event, the easiest way as has been said is just log into your SE Account and check your FFXIV options as it's listed there.