Yeah, I know it's black and white but some younger folks seem to way overestimate the quality of older television. This looks like it may have actually been HD, or at least higher SD.
Anything old enough to have been filmed in black and white was shot on film, which can be scanned in HD just fine so long as you have access to the actual film. The remaster of the original Star Trek is a great example.
That's one of the only bits from The Pentaverate that really stuck the landing for me, guy really put his penis (or at least I think it might have been real) out in the open for us. Lots of people hate that netflix allowed a lot of male genitalia around that time, but I think it was a huge step forwards.