Outstanding workmanship. Dovetailed joints, full-extension hidden slides, European-style hidden hinges, Book matched teak... Top line materials. You would have to pay at LEAST $1500-$2000 for a manufactured cabinet of that quality. I like to pretend I can work with wood, but pieces like that remind me just how poor I am at it.
Congrats on the great gift and great husband.
Just tipping into planted aquaria after twenty years of fish-keeping.