The name is only four letters, (for example: Ab Cd) and they list 10 to 15 of an item, with multiple retainers, for example the WHM i380 weapon usually selling for 800k to over a million they list 10 at 500k each and all of them are signed by the same name.
If you move world it would just say "Obtaining Signature" if i remember correctly.


Story skip doesn't explain how to get your name signed on items you can't actually create, though, the lodestone shows this character has 0 of 300 exp, so it hasn't even exited the starting instance or you'd get 50 of 300 exp (lodestone).
Something seems amiss.