The numbers 74110, 74112, 74158 and similar appear increasingly on Ethiopian bags, and they are genuine variety names rather than lot codes.
Where they come from
Ethiopia’s Jimma Agricultural Research Center selected them in 1974 from local landraces, screening for resistance to coffee berry disease, which was devastating plantings at the time.
The numbers are accession identifiers from that program.
Why they are appearing now
As Ethiopian traceability has improved, roasters can name what is actually in the bag rather than defaulting to “heirloom”. Many washing stations receive cherry from farms planted with known selections.
The cup
Clean, floral and citric — recognizably Ethiopian, and generally more consistent than mixed landrace lots because the genetics are uniform.
Heirloom versus selection
Both are Ethiopian. “Heirloom” means a mixture of uncatalogued landraces; a numbered selection means a specific, propagated line.
Brewing it
Filter, light roast, a clean brewer.
Where you will see them
Most often on washed coffees from the Guji, Sidama and Yirgacheffe areas, where farms planted the Jimma selections widely; 74110 and 74112 are the two most common, and they are frequently grown together and sold as one lot. A bag listing both is normal and still means a specific, known planting rather than a forest mixture.