I’m cleaning up the data and my notes from my May trip to Nottingham to study the Nemi material today. And to be honest I got bored so I took a micro break to think about the data we collected from the RRC 16 specimens from this site. Generally speaking they are about 2:1 Copper:Tin, with just a smattering of lead. But you’ll notice a small subgroup have high lead.
A total of 80 readings were taken from a total of 41 coins.
In a scatter plot we can readily see that high lead correlates to low tin and usually lower copper as well.
My first thought was this might be from recycling leaded aes grave for some of the production, but this is also more likely to occur with specimens that have high light elements, i.e. a great deal of surface interference in the readings so I may very well be just bad data.
Ok back to cleaning up the other data.
Some idea of the rapid striking and mass production of RRC 16/1 can be gathered not just from the large numbers found (1156 specimens at Vicarello!), but also the visible die breaks. Here is a die link observed by Schaefer.
Liv Mariah Yarrow 
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