My finds are usually more "spotted something I knew to be special" than "stumbled upon something cool and googled it", but this thing goes beyond any treasure trove I've encountered- best for me was a quad of nice custom 2-ways from disneyland- 2206h woofers and 2426h compression drivers on DDS ENG90 waveguides, in fiberglass-coated cabinets for $75 per. This find dwarfs that, it'd seem.
Congratulations!