Many well known English 'names' such as Joseph Lang made 'best guns' in their London premises, but also sold cheaper (usually) Birmingham made guns under their name. I suspect Lang's did this - it was fairly normal practice.
Often such guns are of good enough quality, but quite plain. They were frequently exported. As far as I know, virtually ALL main names made 'plainer' guns - often mainly for export with the exception of Boss & Co. Boss did sell plainer guns, but under the name of Robertson (who was a manager of Boss &Co.)
Some were made 'in house', but many were made in Birmingham. Incidentally - the practice continues today with many top names having at least some of the work on their less expensive guns done in Italy and Spain. Some are more open about the practice (and who actually does the work) than others.
