Unidentified Stamp

Unidentified Stamp
Dimensions (height x width): 12mm x 7mm
Monogram: C
Initial: C
Coronet: Earl
The following earls were active in 1834, when the book bearing the initial “C” was published: Cadogan; Carlisle; Carnarvon; Carrick; Castle Stewart; Cathcart; Cavan; Cawdor; Chichester; Clancarty; Clanwilliam; Clarendon; Cork and Orrery; Courtown; Coventry; and Craven.