Watch List notes:

The Academic Collection of Dr Martin Allen (Part II)

Edward I (1272-1307), Penny, class 9b1/10ab mule, Durham, Bishop Bec, mm. plain cross, nothing on breast, 1.33g/1h (Durham Mint 70; cf. SCBI North 475; N 1037; S 1408). Good fine, scarce £40-£50