Snake-thread glass vessels were used from the late 2 nd to the mid-3 rd century AD. At least two production centres/distribution circles have been identified in the western part of the Roman Empire, which probably owed their existence to Syrian glassmaking artisans migrating to the west. One was located in the Rhine region, the other in Pannonia. Considering the distribution of snake-thread glass fragments known to date from Pannonia, it is striking that 52 of the currently known 112 fragments

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... ere found at Intercisa, 45 exemplars came to light at Brigetio and only a few pieces are known from other sites. It is remarkable that in both towns, glass workshops were active during the same period and there is also some evidence that snake-thread glass had been produced in the workshop of Brigetio.