Weight 3.21 g; diameter 19 mm. From Nicola Tammaro's collection.
Other specimens:
- sold on eBay in November 2012 for USD 20.16; now in Tomasz Speier's collection; weight 2.98 g; diameter 20.3-20.8 mm [click for picture];
- sold on eBay in May 2011 for EUR 300; weight 3.32 g; diameter 20 mm [click for picture] [Thanks to the collaboration of Tomasz Speier];
- sold on eBay in September 2014 for EUR 121; weight 3.0 g; diameter 20.5 mm [click for picture];
- from Bastien Lyon - supplément I (plate IX, no. 550β); weight 2.82 g [click for picture];
- from Bastien Lyon - supplément II (plate XXXVI, no. 550β b); weight 2.77 g [click for picture].
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