Recently, I was shown another weight with the "Verrucci Bregogna" label. Again, it looks to be Chinese. Size of this one was about 4.5 inch (11.5 cm) diameter. It had a not-properly-round base which was rough-ground (in one direction).
I took some poor reference photos and an image of the weight + inset for the label is at:http://glassgallery.yobunny.org.uk/displayimage.php?pos=-2581
Like Leni, I have tried internet searches but have come up with almost nothing about Verrucci or Bregogna. I did find an old ebay listing for a weight (which again looks to me to be Chinese) with the label and I have emailed the seller of that one for any info.
By the way, why is everything so complicated these days? When I search using ebay.co.uk or ebay.com and I set various parameters, including such things as "search title and description" and "completed listing only", the result for Verruccci Bregogna (and each word individually) is ZERO, Nowt, Nothing at All, Zilch, B**gg*r All. But when I search for the item number returned by the Google search ... there it is, a listing that completed on Aprl 30 2006. So, why does that not get found in eBay searches? Or am I just getting old and past it?
Anyway, if I get any info at all on this Verrucci label, I will pass it on.