Watch List notes:

Hiberno-Norse Kingdom of York, Uncertain, possibly anonymous, mid-940s, Penny, 1.71g., horizontal type, HT1, +EL.T.A.NGERHT, rev. RERN/ART. (CTCE. Group VIII, f, this coin, illus. pl 27, 20; N.548/1; S.1027A), slightly crimped, among the latest issues of the Hiberno-Norse kingdom of York, very fine, extremely rare.
Bt. Baldwin, 7 March 1979Ex. F. BaldwinG.C. Drabble, Glendining, 4 July 1939, 407aPossibly ex WellsNoted for 6 examples in CTCE, p.233
Estimate: £2,000.00 - £2,500.00