in my Bemis & Call and Coes Wrenches catalog no. 30 (?year ?) it was after they picked up the Coe's line.
page 13: New Model No. 80 Motor Wrench
size 4" $7.80 per Dozen
size 6" $7.80 per dozen
size 8" $9.60 per dozen
size 10" $12.00 per dozen
size 12" $18.00 per dozen
A useful wrench on automobiles, motorcycles, motor boats, gasolene engines
and for all uses where a thin, strong, adjustable wrench is required.
head angle is set at 22 1/2 degrees.
suitable for hexagon as well as square nuts.
replacement slide for the 10" is 25 cents
replacement nut for the 10" is 13 cents