I bought a couple of these new(ish) heritages, one black dial one white, a couple of years ago but both came on rather uninspired black straps and it’s taken me a while to find a strap that enhances (IMO) the gold indices.
I think this strap works for me (and the steel BoR on the black dial) which is why I’m enjoying them more and posting them more often.
I don’t know for certain the year for this one. I acquired a cabinet of Accutron parts from a hobbyist who fancied himself as a watchmaker. Mid-case, with no bezel, no back, no movement, no crystal, just the “bones”! Mine was assembled out of bits and pieces. The case back I put on it is from 1966. That is likely close to the correct year. I have many orphan case backs, so it could have been from any year of my choice.