Star (?) on circle with interior trefoil on crown

T3b
Watermark: star (?) on circle with interior trefoil on crown

 

55mm x 15 mm (max.)

95mm from upper edge, 90mm from lower edge

between chain-lines 3 and 4

Process: backlighting and Photoshop
Source: Tiomna Nuadh ar dTighearna (Dublin 1602) f. 123 (inverted)
Repository: Royal Irish Academy, Dublin