If there is a capital M in a tiny rectangle, a capital B in another tiny rectangle, and a third rectangle with a capital C followed by a smaller and higher o with a period under the o (C° and period under °), it is the mark of Mammatt, Buxton, and Company (Mammatt,George Albert Buxton, and Company from Sheffield, England). There is no MB before that name. This came after the first Mammatt and that name and mark (M B C°) existed only for years 1864-1867 before changing to another Mammatt name. You can see the mark on British silversmith searches under Mammatt. I am sure you'll need a magnifying glass, as their mark was incredibly tiny even on larger items.
I am sure the ring is lovely, coming from that time period, and nice it can be dated to a four year creation span. Hope this is helpful.
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Inherited Antique Wedding Ring | MB Co by: Anonymous
Hi Claire
Any family history please would be great and help our research.. Was your great grandmother from England?
Please describe the letters in more detail. You might need a magnifying glass or jewelers loupe to see the hallmarks because it is an old antique wedding ring, the hallmark may be hard to read.
Is there a dot between the letters? Can you determine if the letters are within a rectangle? Perhaps each letter (separately) is in a small square of its own? Does an ampersand (&) separate the B and Co? Is the O after C slightly higher than the bottom line of where the C begins?
More details would help. The maker's mark could be MB MAMMAT, BUXTON & Co. who were silversmiths & retailers in Sheffield, UK from 1896 - 1906.