Detailed Instructions: Generate a question which can yield the answer mentioned in the input. Generated question must be answered by the answer provided in input, without using any extra knowledge.
Problem:Context : The Webley Revolver (also known as the Webley Top-Break Revolver or Webley Self-Extracting Revolver) was, in various marks, the standard issue service pistol for the armed forces of the United Kingdom, the British Empire, and the Commonwealth from 1887 until 1963.
Answer : 1887
Solution:
Which was the official year for the approval of Webley Revolver?