norm up to this point. The story again called for a Dalek to cut through a metal door, on this occasion the cutting device replacing the plunger resembling the tip of a large soldering iron. This serial also featured a unique variant; the Dalek Supreme. In Death to the Daleks the travel machines display a silver livery with black shoulders, hemispheres and fender, with a task force leader being differentiated from its subordinates by amber, instead of clear, dome lights. During the serial, due to a plot element, the standard blasters are replaced by projectile weapons featuring a drilled barrel with six small fins at the muzzle. After killing two primitive humanoids with these devices a Dalek declares them to be "...moderately efficient". The phasing-out of three section telescopic arms commenced in this serial, with two sections becoming the norm for the remainder of the classic series. In Destiny of the Daleks (1979) many of the Dalek props feature an attachment resembling a small stub aerial projecting from the top of the dome. Six crude, hollow, vacuum-formed Dalek props were also created. They were primarily used during location filming of the serial's finale, although several of them can also be seen in the background of some studio shots. They can be recognised by their thick neck struts and the absence of dome aerials and appendage ball joints. Production photographs taken at the time reveal that they also lacked hemispheres on the rear skirt panels. A group of Daleks are seen in this story forming a suicide squad to destroy an enemy spacecraft, each with a number of bombs attached to its shoulder section. The bomb props consist of yellow cylinders capped at the ends by red hemispheres. A Mark 3 drone Dalek with a distinctive design also appears in Destiny of the Daleks. It features a combination of "goon" and Shawcraft Dalek sections for the upper half, and a unique skirt with a rear section which flares out from the shoulders at almost the same angle as the front. Four prominent bolt heads frame the chest oval and large hemispheres are fitted. These differences are not alluded to in the story and the origin of the components remains uncertain. This variant is sometimes referred to as "The Tussauds Dalek" after Madame Tussauds wax museum in London, where it was exhibited (painted bright blue and silver) as part of their Doctor