Single-sided seal in which Saint Peter and Saint Boniface are depicted standing in a double niche, *crocketed* and *pinnacled*. Under a pointed gable beneath is the bishop, with mitre and crozier, kneeling to *sinister* between two roses.
Image description (reverse)
CLAVIGER VT RESERET FLEXO BONEFACIVS ORET
The relatively small size and the presence of a legend which does not refer to the bishop by name suggests that this may have been Robert's counterseal.
Dimensions: 1 7/8 × 1 ¼ in.
SW I, p.161.