Pre-WWII web slings, common, uncommon, rare or unobtainium?

[peregrinvs]

Finally tracked down a WWI dated sling for my 1913 Enfield SMLE that didn’t cost the earth. It had been dyed black (possibly indicating post-WWI Irish use) but I was able to remove it with Rit Color Remover. Note the maker name and date stamped on the brass ends and a government property / inspection mark inked on the webbing.