Allen and Heath GL2200. Good ol' analog board, works and sounds great, has signs of use for sure, guessing this is 25-ish years old. While technically 24 channels, really you have 16 mono (read mic/line) inputs, and then 4 channels of stereo returns. Direct out and inserts on channels 1-14. Channels 15 and 16 are shared with a stereo return, and you can use either, but not both at the same time. Selectable by a push button. Also 2 dedicated stereo returns on 21-24. Four Auxes/groups out, plus mono out (M) that is a duplicate of LR, and has it's own volume control. 2 track send and return. All channels work, still sounds great, you can look up more details pretty easily on line, but this is your basic Allen and Heath workhorse from that era. THE FLAWS : a few channels mute lights aren't working. Some db markings on a few channels have faded. That's about it though, overall great board.
I have it in a wooden case I built quickly to store it in, it's sturdy and heavy but doesn't look great, but I'll throw it in gratis. Local pickup only, no shipping.