There are so many amazing details inside this almost untouched, 1955 mid-century modern time-capsule house I toured last week — a cantilevered fireplace; warm wood paneling; built-ins; a daramatic wall of windows; one of the coolest bathrooms I’ve ever seen. But my absolute favorite can be found in the basement. At first glance, it looks like a slightly kitschy piece of wall art (a broken tennis racket titled “The Sore Loser.) But don’t be fooled! Pull on the tennis racket, and you’ll discover a