Watch List notes:

Kent, Ecgberht II (c. 765-c.780), Penny, 0.96g., Canterbury, Babba, +EGCBERHT, RX within inner circle, rev. BABBA in angles of long cross crosslet (Chick 85d – this coin; SCBI 20, 639 – this coin; N.199; S.874), reverse metal occlusion, ?pierced, minor edge loss and some scuffs, good fine, extremely rare, a great rarity.
Bt, Spink, September 1991D. Dupree, collection acquired by Spink, 1990Commander R.P. Mack, SCBI 20, 639R.C. Lockett III, Glendining, 4-6 November 1958, 2628G.J. Bascom, Sotheby, 15 June 1914, 12E.W. Rashleigh, Sotheby, 21 June 1909J.D. Cuff, Sotheby 8 June 1854, 279The Lockett sale and Chick both note this coin as pierced, but this is not stated in the Mack Sylloge. The metal occlusion on the reverse might typically appear to be a plug but there is no sign of this in the corresponding place on the obverse. It is possible there was damage to the reverse surface which was repaired.The pennies of Heaberht and Ecgberht II of Kent are the among the earliest broad-flan pennies to be struck and pre-date the main light coinage of Offa. Chick lists twenty-two surviving coins of Ecgberht II, with four of this type
Estimate: £1,000.00 - £1,500.00