Just dug these out of the parts box, and thought I'd post a pic here. The anodising has started to wear away, but I've not seen any before with the reversed-out lettering which these have.
thats defo a stock finish. One of the three old skool fonts. . . (small logo, negative and "regular") on the CBR/RSR era cranks (excluding CQP as a different brand),.
And the fourth is on the current "reissue" Bonz, as a kind of italic.
Leftfield cool, the negative- don't re-ano!!
People have questioned this, but I'm pretty certain that this 'negative' type, as used on the Cooks stem, was referred to (or at least nick-named) the 'Runes'.