In 1924 Enigma "model B" was introduced, and was of a similar construction. While bearing the Enigma name, both models "A" and "B" were quite unlike later versions: They differed in physical size and shape, but also cryptographically, in that they lacked the reflector. This model of Enigma machine was referred to as the Glowlamp Enigma or "Glühlampenmaschine" since it produced its output on a lamp panel rather than paper. This method of output was much more reliable and cost effective. Hence this machine was 1/8th the price of its predecessor.