Watch List notes:

(x) Archbishops of Canterbury, Aethelheard (792-805) with Offa as overlord, 792-796, Penny, 1.30g, two line type with title Archiepiscopus, +offa between two lines, uncial m with contraction bar between ornaments above, trefoil and rex below, rev. aedil / heard / arcepi, trefoil before aedil, contraction marks above arcepi (cf. Chick 247, this coin not listed; CEB 136; N.229; S.885), a field find, slightly creased, small edge split at 7 o'clock and small chip at 2 o'clock, otherwise very fine, extremely rare.
Provenance:
'A collection of Coins of the Canterbury Mint, the Property of a Gentleman, Spink auction 211, 13 December 2011, lot 6
Estimate: £1,500 - £2,000