Lighthouse Stamp & Currency Ultraviolet UV table lamp (long wave) L92 Lighthouse Stamp & Currency Ultraviolet UV table lamp (long wave) L92 For the reliable detection of fluorescence on stamps, bank notes and credit cards. Broad spectrum of long waves. Peak efficiency at 366 nm. 4-watt bulb. Operates on 110 - 120 V, 60 Hz mains supply. Double insulation. Overall size (L/W/H): 7 1/8 x 4  x 3" (180 x 115 x 75 mm).