ANTIQUES ROADSHOW is in Knoxville, Tennessee, where host Mark L. Walberg and appraiser Ken Farmer head to the Museum of Appalachia to discuss Appalachian musical instruments. Highlights include a Tiffany pottery vase, circa 1905, that was purchased at an estate sale for $ 75 and is now valued at $9,000 to $12,000; a shoe belonging to Robert Wadlow, the tallest human recorded in history; and a Chinese gilt bronze Amida Buddah, circa 1550, that is unusual in size and is appraised for $40,000 to $60,000.