CONSIDERAŢII GENERALE PRIVIND STAREA DE CONSERVARE A COLECŢIILOR NUMISMATICE AFLATE ÎN PATRIMONIUL MUZEULUI JUDEŢEAN DE ISTORIE ŞI ARTĂ ZALĂU
GENERAL CONSIDERATIONS ON THE STATE OF CONSERVATION OF NUMISMATIC COLLECTIONS FROM THE COUNTY HERITAGE MUSEUM OF HISTORY AND ART ZALĂU

Summary/Abstract: This paper seeks to provide an overview of the state of conservation of the numismatic collections from the county Museum of History and Art from Zalau, by identifying the main forms of degradation with which it is faced. The numismatic collections of the county Museum of History and Art Zalau include 9810 coins from various periods of history of county Salaj. Numismatic objects that are part of our collections are composed of gold, silver, bronze (copper), nickel and iron. In the first part of the paper a presentation is made of the values of microclimatic factors; we mean here in particular relative humidity and temperature, and an overview of storage space (repository number 1) is maintained throughout the numismatic collection of the County Museum of History Art and Zalau. Relative humidity and temperature monitoring was performed during the period 01/09/2009 to 05/30/2010 and was executed with a termohigrometre. The conclusion was that monitoring these parameters and the conditions under which the record is the number one store does not fall within the permissible limits for the storage of numismatic collections. The proposed solution is the exterior wall insulation and buying a dehumidifier to ensure a drop in the value until the relative humidity will be within the parameters set out in the rules of conservation. The next step was to check the conservation status of the objects that make up the numismatic collections. For a correct statement of the conservation status a magnifying visual inspection of each item in these collections was carried out. Checking the conservation status of degradation resulted in the division of faced numismatic pieces into four categories depending on the factors that produce them: 1. Degradations occurring during and after the technological process of producing the coin; 2. Degradation in the era in which coins were used; 3. Degradations in the period after active use of coins; 4. Degradation arising from deposition in the ground; 5. Degradations occurring during the coins preservation in the museum. A good knowledge of the damage to numismatic collections in museums helps us to understand the factors and mechanisms that produce them, and thus eliminating those which threaten the existence of these priceless pieces of history for the scientific community.

• Details
• Contents