1877 British Indian one rupee coin Queen victoria empress

The 1877 British India One Rupee coin featuring Queen Victoria as Empress is a historic silver coin issued following the Royal Titles Act of 1876, which changed the title inscription from "Queen" to "Empress".Physical SpecificationsComposition: Fine silver (0.917 silver, 0.083 alloy)Weight: 11.66 gramsDiameter: 30.79 mmThickness: 1.8 mmEdge: Reeded / milled