It was available at mysmokingshop.co.uk ca 2012/'13 - 2015/'16, listed next to Samuel Gawith Kendal Brown Original, Kendal Brown Plain, Kendal Brown Scented and Kendal Brown Special. I got a fresh tin of this snuff in 2013 or '14, it was very moist, even difficult to pinch due to high moisture content, moister than fresh Bernard Kownoer, think the same moisture and texture as freshy-fresh F&T Santo Domingo; ammonia bomb with citrussy note, high in nicotine, very sharp burn. Leathery-tarmacky-earthy-smoky side was hidden beneath that thick layer of ammonia and citrus and became more pronounced later on (when I was left with the half of the tin). I was slow with it, the tin lasted me for a year and a half.
Hoping top get the same, I ordered a tin of Samuel Gawith KB Original in the end of 2019, it's very different from the snuff pictured above. Came properly vac-sealed, but ammonia and citrus-free, dryish. Medium-moisture only. Burn and nic still there, tho, but there's a familiar foul smell of old, spoiled snuff. Not nearly as intense as the foul smell in some tins of Auld Sannick, Spearmint Gold and Blue Crest I got. Same smell was in both large and small cans of Taxi Dead (once-Red) I got last summer (ammonia-free, dryish, low in nicotine). It's hard to describe it, but my nose keeps telling me I should steer clear of it.
Anyways, I'm interested to know if there's an analogue of that SG Kendal Brown snuff in the current range of SG KBs.