Kamlooky - following the pictures that you put up in OP, you mentioned "Curious to know what all dem #'s mean." I can not "interpret" all of them - but a few, I think - maybe others can add to the story. That appears to be an SMLE - so "SHORT" (as opposed to LONG - when an Infantry man's rifle was normally like 5 feet long or more), "MAGAZINE" (It had a detachable one in an era when many fighting rifles were single shot), "LEE" - the American guy that mostly invented the action and "ENFIELD" - the British armoury that mostly invented the rifling profile. So circa 1920's, when British seemed to have renamed their various rifles, that one became the "No. 1".
Was a british thing, I think - that nothing got made except to a "sealed pattern" - so like a blue print - and no capacity to alter a "sealed pattern" - so when improvements required, the thing got a new name - new pattern - I think major modifications resulted in a new "Mark" version, and some minor modifications got a "*" - from the wrist stampings, looks like yours is a Mark III * - so was three major changes and a minor change since the original "sealed pattern" for that rifle. At some point, the markings got changed from latin "III" to arabic "3", but I am not sure what year that was done.
The wrist stampings start with a British crown, then "GRI" - George VI was British King in 1941, so "George Rex" - he was also Emperor of India, so "Imperator" - hence "GRI". I think the era of British crown being "Raj" kind of disappeared circa 1947 or 48. Ishapore is the name of the place in India where that rifle was made - for all I know, but I am not sure, they are still being made there today, like that one. The arrow shape with the broad head is the mark of British (military) ownership or acceptance - somebody else will have to say what the numbers signify. Somewhere I think that I read the tooling that was sent to Ishapore Armoury may have started at the Fazakerly Armoury in Britain, but I am not sure of that.
To really display what I am not sure of - was common, I think, that an Ishapore rifle would have an "Ishy" screw inserted sideways through the forearm as a reinforcement. I am reasonably certain that the woods shown on your fore stock and hand guards are beech - not sure that was used by Ishapore - but was quite common in Britain - I have a "beech" set that I bought for a No. 4 from eBay a few years ago.