Under condition of Polish medieval times issues concerning metal money circulation to a large extent are connected with monetarisation of trade. The beginning of coins being used in a market exchange may be possibly specified merely due to their finds. The use of extremely scanty written sources actually equals to next to nothing at all. Thus while analysing the phenomenon, the researchers' attention is focused on monetary finds. So far chiefly hoards have been made us of at it. Small finds have been the category of sources which have not been referred in full. The typological structure of coins occurring as single finds confirms on our knowledge acquired from hoards. There are, however, certain differences in detail. The first conclusion to take is that no category of monetary finds -both small or larger ones - reflects on its own or in full the structure of monetary mass occurring over the area it has been found. Hoards, due to the fact they comprise many relics, are most helpful at it. In order to acquire the possibly most complete knowledge on the whole of coins occurring over a given area, it is by all means necessary to analyse all the monetary finds. Single relics - by dint of obvious reasons - confirm merely on the presence of just kind of them. As it is, a large part of small finds occurs in selection. Much more meaningful are complexes of single finds, discovered on one or a number of sites close to one another. Such a source basis is to be obtained merely through development of archeological research conducted at great length on the possibly largest number of sites.
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