Thanks again for such a swift response. I have to admit I recently bought the gun at auction due to it's case and clean lines. Also I wanted a 20g sbs. So with that in mind I unfortunately don't know the guns history. I may be able to find out the previous owner & approach them for any background on the gun. Can you confirm for me if it is indeed from 1919 and also the max cartridge you would recommend. I want to safely use the gun and possibly for game shoots in the future. All your help has been fantastic and by all means please post the pictures on your engineering website. I can try & take more, clearer pictures if you need them. Cheers