The RGZM Database at Mainz relating to „Names on Terra Sigillata“

The publication of « Names on Terra Sigillata » in 9 printed volumes was a first step in bringing together the information of over 200’000 stamps and signatures collected by Brian Hartley and Brenda Dickinson at the University of Leeds.

The RGZM database at Mayence was conceived to create statistical exploration tools for interpreting the data and to answer the problems of keeping the information up to data with new material (and revisions of existing information). To this end input masks will be designed to allow local data input. Access to the database will be freely available in 2016.

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The RGZM database at Mainz allows for queries on potter names (using autocompletion) together with individual die numbers.
 
Many stamps are written using non-standard letters, similar to those in epigraphic inscriptions. Dr. Paul Tyers has created a Unicode TrueType font comprising more than 300 special characters which can be used in search strings.
 
     
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Search results show stamps together with the sites on which they occur. Historically dated sites are marked red. Unverirecords are marked with a hyphen and yphen and have no illustration.
 
Access to the full stamp record can be obtained by clicking on the site name.
Editing mask.
     
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Since the stamps have attributed dates it is possible to compare dating curves of diffe-rent sites (here Aislingen, Velsen, Rheingönheim and Saalburg) using the percentages of datable stamps at intervals of 5 years.All sites have their geographical coordinates attached. It is therefore possible to plot spacial distributions of various sorts.
 
Potter distributions (here Aquitanus).
 
Production site distribution (here Les-Martres-de-Veyres).The data can also be used to investigate the underlying economic aspects of the Terra Sigillata industry.
 
     
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Comparative distributions of individual South Gaulish potters show that while some send their production principally to the north (Censor i).
 
Others had a strong market in the south (Silvanus i).
  The export volume of South Gaulish manufactures is highly correlated (Pearson correla-tion eficient 0.81) with the number of dies used, i.e. the higher the export volume, the more die varieties used.  
     
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A map of the midpoints of the geographical distribution of individual potters. The colors represent the different production centres. The ellipses use the standard deviations of each production centre to show the centres of gravity.
 
GIS based research shows that the cheapest route from Banassac to Carnuntum involves a detour following the Neckar. The actual ree with this t river agree with this observation.
 
Aspects of the internal organisation of individual firms can also be demonstrated: here the usage of speciroduced clusters comprising dishes, clusters comprising dishes, cups, rouletted forms and decorated vessels of the Aquitanus workshop.
 
     
 
 
 
 
The principles underlying this database can be applied to other artefacts carrying stamps or made from moulds