sadly i do not recognise the zip files. i was just wondering if i have to extract all of them or if i might be able to ignore them as there are many of them.
haven't found the wallet.dat yet, will continue.
as far as i can remember, the wallet wasn't password protected. it was one of the first 2011 bitcoin Qt versions.
I hope you're not looking for the name "wallet.dat" as that name has gone. It's stored separately to the actual file data. Only way for you to get the data is to try them all in core or trying to open them in a text editor to determine their authenticity as a potential core wallet.