The marking "Quadruple New York 915 E" on your teapot likely indicates that it is made of quadruple plate silver, a type of silver plating that is thicker than standard plating, providing greater durability. "New York" refers to the location of the manufacturer, suggesting it was produced by a company based in that city. The "915 E" could denote the specific model or pattern, as well as the silver content, with "915" typically indicating a higher silver purity. Collectively, these markings help identify the teapot's origin and quality.
If you mean 9/15 then it is 3/5 simplified
If you mean 9/15 then it is 3/5
915 is an integer and not a fraction but, if you must, you could write it as 915/1
If you mean 9/15 then it is 3/5 in its reduced form
3.15pm.
915 = CMXV
130.7143
Exactly 915.
915 / 2 is equal to 457.5
915 305,3 61,5,3
915 parts per 1,000 are made of the precious metalwhich is same as 91.5%so 8.5% is made of other metal, for strength
Valuable and important sterling silver pieces.