In Spokane, Washington, ANTIQUES ROADSHOW host Mark L. Walberg joins appraiser Kathleen Bailey at the historic E. J. Roberts mansion to look at examples of a charming Victorian lighting fixture: the fairy lamp. At the Spokane Convention Center, appraisers brighten at the sight of such enchanting finds as a collection of pottery by 20th-century master ceramicists Otto and Gertrude Natzler; a moving landscape painting by early 20th-century artist - and sometime Alaskan gold prospector - Sydney Laurence; and an heirloom Waltham railroad pocket watch with a rare winding mechanism and diamond end stone, valued at $4,000 to $6,000.