G'day from Downunder This one is making what's left of my brain hurt! I have a D&Co. makers mark with Chester shield (I think) The complete mark is: ]D&Co. Crown 18 Shield B 819 Looks like a 1910 B, I have a good pic https://www.925-1000.com/pics/Ximg.jpg https://www.925-1000.com/pics/Ximg.j...