about a foot across, with lids that rise up in the centre. Their output of these was probably made for stock rather than individual commissions, and filled a market for gifts for betrothals and weddings. They sold mirrors framed in a similar style, though fewer of these have survived, and religious pieces both small and in a few cases very large.

The workshop takes its name from Baldassare Ubriachi or Baldassare Embriachi, variously described as a nobleman, merchant and diplomat, or an "international man of business and