Watch List notes:

IRELAND, Hiberno-Norse. Sihtric III Olafsson. Circa 995-1036. AR Penny (19.5mm, 1.33 g, 3h). Phase I coinage. Imitating Long Cross type of Æthelred II. Dublin mint; Faenemin, moneyer. Struck circa 1000-1010. + ÐYMN ROE+ MNEGMI, draped bust left; pellet behind neck / + F•ÆMIENMN NΘI ÐYM, voided long cross, with pellet at center and triple-crescent ends; pellet in each central crescent. O'S Type 3; SCBI 8 (British Museum), 29 var. (rev. legend); SCBC 6108. A little double struck on obverse, small scratch and dig on reverse. Toned. Near EF. Very rare.

From an American Collection of Hiberno-Norse Pennies.

The meaning of the obverse legend remains enigmatic