The stamp "B 25" on a ring typically indicates that the piece is made of 925 sterling silver. The "B" stands for the brand or manufacturer, and "25" signifies the silver content, which is 92.5%, a standard for sterling silver.
Meriden Britannia Company made silver items. These two pieces were probably part of a series from this American silver manufacturer. Meriden Britannia started in 1808, and ceased to exist in 1898.
Frank Stallone, tobert tangrea, peter glassberg, William ring and Joseph giambelluc
Sterling silver contains 92.5% silver. The rest is other metal, mostly copper but it varies with manufacturer.
No connection between Spencer Silver and the "Spencer Silver Mansion" in Havre de Grace, Maryland. This B&B is owned by a Mr. Spencer and a Mr. Silver who combined their names for the B&B. Spencer Silver
Michael B. Silver was born in 1967.
Thomas B. Silver was born in 1947.
Thomas B. Silver died in 2001.
Meriden B Company was a manufacturer that made silverware out of "black silver" the kind of silver that was economical doing the time, it still had the flare of expensive silver settings and today the silver alone is of high value, since refined silver was getting high in value and the price of refined silver was costly at the time, Meriden B Company started offering silver that was not "refined" before it was marked, it was before "nickle silver" so the silver is still 100 percent! The product itself will appear black before you polish it, which should be left in that state if you want to sell it. All Meriden B Company is over 100 years old and have a historical value, family's that can trace back 100 year will know about the Meriden B Company product. Meriden B Company went out of business after becoming well known for these kinds of products.
Silver usually is stamped with a hallmark - these are odd symbols particular to the jeweller or manufacturer.
IS stands for the International Silver Co. and unless it says sterling or 925/1000 it is silver plate.
If the servewear is made from silver it will not be microwaveable. Check with your manufacturer.