Both front sights look like they belong to me.
You'd need to inspect for markings if any to help identify. Could be marked on the underside as well.
Then determine whether or not they were factory options. Old catalogs list them.
So you could determine period or correct, but, hard to tell if "factory" because front sights in general were not recorded in ledgers.
The rear sight on 13.xxx is known as a King rear sight. Likely a replacement as it is several years newer than the rifle. Not a bad thing though.
The rear sight on 80.xxx looks correct. It is a "long rear sight", ~3 5/8" long, several variations.
