Klawans, Reading & Dating Roman Imperial Coins, 1953, 125 pp; Seltman, A Book of Greek Coins, 1952, hardcover, 31 pp + 48 plates; hardcovers; plus Seaby, Greek Coins & Their Values, 1959, `60 pp, illus; Barclay Head, Handbook of Greek & Roman Coins, 32 pp., softcovers.