If you are a digital artist, you've found a goldmine of classical assets. If you aren't, you might have just wandered into an Italian public record archive!
Available in styles like Brass, Steel, Verdigris, and the "CHIC" collection.
Interestingly, a similar naming convention ("ALL 61 - 70.7z") appears in public transparency archives for the Comune di Como in Italy, where it likely serves as a container for official municipal documents or contract filings.