Fig. 6

µCT models of sphere 5372-013. Top row: slice along planes tangent to the sphere and perpendicular to the loop; bottom row: slice along planes tangent to the sphere and parallel to the appliqué. a Exterior; b vertical slice through the loop combined with horizontal slice beneath the loop, allowing visibility of the joining point of the frame; c same slice as b, where yellow lines are the interpretation of the position of the frame wires and green and blue lines that of the multi-twisted wire used as decorative infill; d horizontal slice at the attachment point of the appliqué; e same slice as d, where yellow lines are the interpretation of frame wires, showing that the rosette-shaped frame has been built up of a single bent strip with the end points indicated in red; f horizontal slice above the appliqué combined with vertical slice through the centre of the filigree sphere, allowing visibility of the joining point of the appliqué