CH offset DBE wrenches were produced up to 1963 when Campos Hermanos became ProtoMex. These used to be all over the uesd market in quantity but with everyone here gone to the Asain buffet the tool users started snagging even ugly ones.
This one is a nice example probably because it is 25/32-3/4" and spent its entire life before me with a Harry Homeowner type.
Dense steel with a zinc finish made them top line in Mexico for a few decades. Cheaper was the Hema line with rougher finish and no plating.
