Cigarette Case

I got out a silver wine coaster at Christmas and discovered that it was badly tarnished and I didn't have any silver polish. I have now resolved both problems! I had a good silver-polishing session earlier, cleaning the coaster, a quaich that was bought for me as a baby, and this...

This is a cigarette case hall-marked in Sheffield in 1903 and engraved JS, the initials of my great grandfather.