Lừa pattern

Sọc lưng nguyên thủy

The dun dilution on any base color with primitive markings: a dorsal stripe, leg barring and often a shoulder cross; the base color is recorded as dun, red dun or grullo.

1 Lừa breeds list Sọc lưng nguyên thủy. No club standard describes it. At least one club disqualifies it in 1 breeds.