Seal-Matrix: Richard (de Natherton?), bishop of the Isles (d.1275) (counterseal)

Owner: Richard, bishop of the Isles (d.1275)
Matrix Shape: oval
Image description (obverse): Counterseal, matrix of antique gem, depicting a horse’s head terminating in a bearded human head.
Image description (reverse)
Legend (obverse): ASCENDE CALVE AS[…S]ALVE
Legend (reverse)
Catalogue: EA/Sodo/1/1C
Notes: Dimensions: 7/8 × ¾ in. (22 × 19 mm.) SW I, p.151. Durham 3211 (2).