How to determine if wood has historic value?

[Fixerupper10]

I'm trying to decide whether to replace or repair the rotting fascia on my porch. It dates to 1850 at the newest (1760 max) so if the wood is old enough to have historic value, I'll just repair it. But it might be from a 1995 renovation. Short of hiring a dendrochronologist, is there an easy way to determine roughly how old the wood is?

[V-Man]

I'm not sure why the age of the wood would dictate repair vs replacement unless the fascia is an original moulding or period significant in some way. If it can be repaired, I would guess that would be more cost-effective and you would be preserving the original fabric of the house so it seems like that is the easy decision. Something more to this?