Interesting info re the gun and its price. In 1920 a ship fitter earned 5 pounds per week (taken from a parliamentary report of the time) that would be 250 pounds per year. Nearly four times the price of a new Martin sidelock.

In other words with some effort a worker back then could save up enough to buy the same best gun as his boss in a year or two.

Cannot say the same at today's prices! Not many earn four times the price of a current British gun.