1991-1995 3590.50 (caseback may still be marked 145.022 instead of 145.0022 / 345.0022) Watch, photo not mine
I always thought they were from 70's-90's...Fratello could have had a error in their write up. https://www.fratellowatches.com/speedy-tuesday-differences-speedmaster-bezels/
The first style of DNN ran from 1970-1991, then this one from 91-95, and the modern dot-under-70 from 95-present. The one in the (four-year-old, pre-Speedmaster madness) Fratello article is the 91-95 version. This is the 1970-1990 version: Not my watch or image; note here it appears incorrectly on a 145.012