A=12,50 mm; B=13,00 mm; C=1,10 mm, sterling silver (AG-925)
A=22,00 mm; B=14,90 mm; C=1,10 mm, sterling silver (AG-925)
A=16,30 mm; B=17,30 mm: C=3,00 mm, sterling hopea (AG-925)
A=16,30 mm; B=17,30 mm: C=3,00 mm, sterling hopea (AG-925)
a=19,00 mm; plate diameter b=16,50 mm, sterling silver (AG-925)