Smellie Lithgow mag question

Still learning new things everyday.

When was the 4th version (class?) Of the no.1 mk3 mag released?

If someone has an answer to all 4 classes that would be even better!

Thanks in advance

Late 1911 the "4" magazine gets mentioned in "List of Changes"

No. 1 - Introduced on January 1, 1904;
No. 2 - Approved on March 3, 1906;
No. 3 - Approved on July 6, 1911;
No. 4 - Approved on July 6, 1911.

Some time ago I wrote an article about the magazines, unfortunately non in English:

Caricatori Lee Enfield

Easy open the tag and hit google translate page awesome article

Beautiful thanks guys!!