Robert Pringle & Sons Solid Silver Cigarette Case

This is a Robert Pringle & sons Silver Cigarette case, the hallmarks R.P are for the maker, the anchor for Birmingham and the letter W for the year it was made 1921. I like this curve shape and the wonderful engraving. Here is a little history on Robert Pringle and Sons.
The business was founded in London by Robert Pringles (1) in 1835. The activity was continued by his son, Robert Pringle (11). In 1882 the firm was changed to Robert Pringle & Co.
In 1890 the firm was active with premises known as the wilderness works in all the branches of the trade, as gold, silver and gem, jewellery making, gilding, plating, refining, assaying, electroplated manufactory and silver-plate making.
The proprietor Robert Pringle (11) was assisted by his sons, James and Robert Pringle (111) ( bullion e refinery department), William Pringle (silver department) and Edwin Pringle (watch department).
In 1899 Robert Pringle (11) took in partnership his eldest son Robert Pringle (111) and the firm changed to Robert Pringle & sons.
In 1907 Robert Pringle (11) died, and Robert Pringle (111) was joined in the partnership by his brothers William, James and Edwin.
In 1931 the firm was converted into a limited liability company under the style of Robert Pringle & Sons (London) Ltd.
Many thanks for looking