Original and genuine MOS 6526A from new old stock (NOS). They are usually found online as "used" but these chips are part of a new stock withdrawn in the years 1988/1990 from Commodore Semiconductor Systems factory. I guarantee that these chips are really NOS and I also attach in the photo the import tag of the parent company with the relevant production lot.
All the CHIPS are from the same batch (4286 206A).