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Open-end Wrench (1972):
Marking: "SELECTED STEEL" (most likely in earliest production in 1972)
5 Wrenches: 8/9, 10/11, 12/13, 14/15, 17/19
Decal: no decal
Ends: Forged unfinished ends
Finish: Satin Silver Finish
Open-end Wrench (1973-1973.5):
Marking: "SELECTED SPECIAL STEEL" (more common, 1973 and 1973.5)
5 Wrenches: 8/9, 10/11, 12/13, 14/15, 17/19
Decal: no decal
Ends: Forged unfinished ends
Finish: Satin Silver Finish
Open-end Wrench: (another possible option presented in literature)
Marking: "DIN 895" "WEST GERMANY"
5 Wrenches: 8/9, 10/11, 12/13, 14/15, 17/19
Decal: no decal
Ends: Forged unfinished ends
Finish: Satin Silver Finish
​
Reference: Book by Drs. Gruber and Konradsheim
Boxed Wrench (1964-1977)
Size 19 x 22mm
Marking "CHROM-VANADIUM"
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