Might have one in the archive we did for Gebruder Merkel a few years ago, will check.

Meanwhile, on the subject of Walter Locke & Co, here's an image I ripped from a UK Gun Trader website a while back. Very unusual design, seemingly with a pocket included. Perhaps for owner's details, ...or gun details, ...or loading info, ...or game licence, ...or....?

Apologies for the low res image, had to blow it up a lot!

Never seen one anything like this in the flesh!