Cambridgeshire, England. Size 9 1/2 with bold twist motif 2/3 its circumference. 1.8mm to 3.2mm thickness. The spiral or helix was a favorite Viking form. Professionally refurbished with the 24karat gold overlay restored. Vikings exchanged wedding rings on the pommel of the groom's sword. See the reference image which shows the process. Jewelry gift boxed with certificate of authenticity.