[RDA-L] Unknown date

[Gary Oliver]

I have searched the Toolkit and can not locate instructions for a 
situation like this one.  If a manifestation has no date of any kind, 
how is that recorded?  There are no dates associated with the author, so 
I do not have either an earliest or latest possible year.   I would say 
that based on the condition of the piece, I am able to assume a century.

Thank you,
Gary Oliver
Abilene Christian University