Recently bought this Caligula As , compared to others which are between 10-12 gram this one is 17 gram. Wonder why. Some Info about Segobriga: untill 1600 AD it was difficult to produce flat glass for windows in a decent size, by the 17th Century glassmakers were able, using the cylinder method, to produce flat glass that measured 8 feet x 14 inches. During the 1950's Pilkington in England invented the float glass method, pouring melted glass over a layer over melted tin or lead. The result was perfect flat glass in large dimensions, and without distortion. Please show your Segobriga coins. Thanks.
That is heavy, mine is the norm. Caligula (37 - 41 A.D.) AE30 AS SEGOBRIGA, SPAIN O: C CAESAR AVG GERMANICVS IMP, laureate head left. R: SEGO BRIGA in wreath. Segobriga Mint 30.5mm 10.1g Burgos 1724