dateless vs unaltered

dateless and unaltered both are adjectives.

Word	Noun	Adjective	Verb	Adverb
dateless	No	Yes	No	No
unaltered	No	Yes	No	No

dateless (adjective)	unaltered (adjective)
having no known beginning and presumably no end	remaining in an original state
unaffected by time
not bearing a date
of such great duration as to preclude the possibility of being assigned a date