Hi Dave, your going to have a hard job to find originals in good condition, if you do, you will pay a lot of money for them. Fine sporting antiques has a tatty Chas Lancaster and it is £90. I take it you want them for gun cases or are you going to make copies? . I renovate old gun cases and it is nice if you can have originals but you cannot always get them. Have you tried Peter Dyson? they do very good repro which with a bit of work can be aged, instant coffee powder works well. Original labels are rare and are getting rarer i’m afraid but best of luck with your quest.