As there is no record of a Sir Richard Welisher, or Welesher, and those surnames are practically unknown, I think it is much more likely the correct reading is Sir Richard Webster QC, 1st Viscount Alverstone. http://en.wikipedia.org/wiki/Richard_Webster,_1st_Viscount_Alverstone

You could have a handwriting expert examine the copy if you want confirmation.

The medallion on the case appears to have been scraped or photoshopped so if the latter perhaps the arms engraved thereon, if any, will confirm.

I don't have Who's Who that year, but I think you'll find there is no Sir Richard Welisher.

The 't' in Webster is not crossed and the line from the 'b' to the 's' is brought too low instead of being carried across and that fits the very flat style of the writer. This is what caused the confusion I think.

Sir Richard Webster appears to have been quite a sporting gent, and he certainly had the means to order a rifle of this kind.

A bit more research of his comings and goings in the UK shipping records and you may find he went on a safari or two. Or he may have been more of a Highlands deer stalker. Should be easy to find out.

Just as a matter of curiousity, what would have caused that mark around the left hand firing pin hole?

A thing of joy and beauty forever!