Handsome boy!!!
That looks like a sable steel to me. Sable isn't exactly a "pointed" color, rather it's called shaded (in fact the sable allele <cchl> is also known as the shaded gene). Yeah, it sounds like the "self black" doe was either a supersteel or a self steel. Steel isn't usually expressed unless it's paired with an agouti gene, so I'd guess she's a supersteel, since a self steel doesn't have the agouti <A> to produce a proper steel like your buck is. The test would be to breed the "self black" doe to an agouti - if she's a supersteel, that should produce all steels; you'd get some steels if she was a self steel, too, but probably not the whole litter.
Sable is in the C series, and steel is in the E series, so you can get a rabbit that's both steeled and shaded. The silvery nose markings and grayish white belly are marks of a steel, which is genetically an agouti and retains a bit of the agouti markings (in varying amounts, I've found).
Himalayan is on the same locus recessive to sable, and he could very well be carrying himi <ch> along with a sable <cchl>. In fact it's likely, since you're getting himis from him with a himi doe. It's either that or he's carrying REW <c>, since if he was <cchl cchl> he'd be seal.
I did have a sunburnt chinchilla with a nose like that, but his ears and feet weren't clearly sepia-toned like your buck, and your buck is definitely steel, not chin.
Here's Groucho, named for his "mustache," not his temperament!
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