Aethelred II of Northumbria, 2nd Reign 844-850 AD, AE Styca. 13mm. Phase II Group Ci, moneyer Monne. 

+EDILRED X around cross in circle of dots. 
Moneyer's name MONNE around cross in circle of dots. 

Spink 868; Pirie 1187. 

With permission of abccoinsandtokens.com, Sept. 2011.