Many panels restored by Thomas and Drake – who worked extensively on the glass of the Burrell Collection, Glasgow, in the early and mid-twentieth century – used a milled lead with a repeating ‘X’ mark, as originally highlighted by Linda Cannon. The firm was based in London, and it is likely that this lead derived from a supplier in or near the capital, but more examples are needed in order to confirm this.
If any Vidimus readers can identify projects also using this marked lead, or a variation of it, please email Marie Groll directly with the details.