Conservation around the Millennium (Hungarian National Museum, 2001)
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reassembled. Thick dusty dirt layer of atmospheric origin can be seen both on the inside and the outside of the glass, which is the result of storage conditions. The raw material itself is well preserved, and the fragments could be handled with ease and sufficient security. The silver- coloured metal coating that imitates the mesh can be sensitive to the treatment. (Fig. 1) 1. The jug before restoration TEST OF THE ADHESIVE The burning test of the adhesive samples taken from the fracture surface of the object attested to natural resin. Most probably shellac was used. The same is suggested by the fragility, the rigidity and the strong yellowish colour of the material. According to the card that came with the object, the glass was first restored in 1960, when shellac was the commonly used adhesive. ANALYSIS OF THE PRODUCTION TECHNOLOGY Analysis of the shaping method Analytical method: microscopy (magnification at200x) Result: The three-layered glass was made with free blowing. Enamel painting and silver coating were applied on the surface (fig. 2). — enamel paint layer — colourless glass layer _____ yellow glass layer — white glass layer 2. Cross-section of the glass layers 53