The Gold and Silver Inlaid Mirror-Hanger, when first acquired by the Ho-Am Art Museum, was in such a badly corroded state that its original form, use, and functions were impossible to discern. The first display of this object, along with an explanation of thr process of its restoration, was part of The Great Koryo Exhibition(1995.07.15-09.10, Ho-Am Art Gallery). X-ray radiography was used to aid the discovery of a variety of inlay motifs that had been impossible to see with the naked eye. This paper will discuss the process used in the course of restoration as well as illuminate the technique and sophistication of the inlay technique as part of the scientific analysis. It is generally agreed that the inlay technique first flourished during China's Period of Warring States (BC 403-221) and further developed in the Han Dynasties (BC 206-AD 220). In Korea, it is thought that at the latest, inlay techniques were available by the 4th century AD. By the 5th and 6th centuries these techniques were in wide use and throughout Koryo (AD 918-1392) and Choson (AD 1392-1910) a variety of different inlay techniques emerged. From ancient times, gold, silver, and copper were used as materials for inlay. The different forms of inlay technique which emerged over time, including the surface, line, grid, and high relief inlay techniques, all are appeared depending on the periods in which they were found. The Gold and Silver Inlaid Iron Mirror-Hanger was covered completely with iron rust. The portions of the inlay that were hard to see with the naked eye were confirmed by using X-ray radiography. Weakened portions of the object had a consolidation (Paraloid NAD10) done three times. The inlay was carefully bared using a small pen drill (vibrator-tool) and surgical scalpel. Afterwards, the following eight motifs: line, arabesque, spiral, wave, chain, tortoise shell, lotus flower, and flower were revealed. The inlay material used in the creation of the motifs was gold and silver of a high degree of purity. It was examined by EDS (energy dispersive spectroscope: Model OXFORD ISIS) attached to a SEM (scanning electron microscope: Model JEOL5800LV). The Gold and Silver Inlaid Iron Mirror-Hanger was found to be the first object of its kind to have been decorated utilizing a variation of a unique line inlay technique. This technique has now been designated the malleable line inlay technique.