I bought a Number 1 and a number 5 from my local gun shop. The No. I is an LSA 1915 and has been FTR'D before. It still has a brass stock disc that I haven't been able to identify:
https://www.milsurps.com/images/impo.../SHTLE_9-1.jpg
I think it means the 56th (London) Infantry Brigade but I find it somewhat strange if it has been FRT'D why would the disc still be there?
Here are a few other photos:
https://www.milsurps.com/images/impo.../SHTLE_8-1.jpg
https://www.milsurps.com/images/impo...SHTLE_10-1.jpg
https://www.milsurps.com/images/impo.../SHTLE_6-1.jpg
and here's the No. 5:
https://www.milsurps.com/images/impo...JUNGLE_8-1.jpg
https://www.milsurps.com/images/impo...UNGLE_16-1.jpg