These unusual miniature sheets require special glasses with red and cyan filters. The anaglyph image contains information for both eyes but different colour filters on each eye block some from reaching the left eye and some from the right eye, which creates a stereoscopic or three dimensional effect. The Lamp Museum opened in Zsámbék in 1979. Its collection of over a thousand lighting devices includes simple oil lamps, candle holders, industrial and domestic lamps, oil and paraffin lamps, lamps made from antique Chinese vases, and paraffin lamps with bases made of Zsolnay majolica and Meissen porcelain. The Museum was entered in the Guinness Book of Records in 1995, and became a member of the Rushlight Club (International Association of Collectors and Students of Historic Lighting) in 1980 and a member of the National Museum of Australia in 1983. A few precious pieces from the collection of the Lamp Museum in Zsámbék can be seen on the stamp. The new stamp is released as a single stamp and also as a miniature sheet containing four stamps. It is being issued simultaneously with another stamp and miniature sheet in the Treasures of Hungarian Museums series, the Calcite Crystal Museum, Fertőrákos. The two miniature sheets are also available as a 3D set. The set in an A5 film-wrapped pack consists of a copy of each of the two different special miniature sheets with information in Hungarian and English, and a gift pair of 3D glasses. Source: esestuske.geo.info.hu, mizsambekunk.hu/muzeumok/lampamuzeum