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Here is another mystery wrench. The wrench in question is clearly marked Snap-On B-1757-9/16 and MADE IN USA. It is also weakly stamped with what I believe to be the 1 code for 1941 on the side of the bar handle opposite the model number. The wrench is 10” in overall length, has a 9/16” 12-point box end on each end, one is straight and the other is a deep offset and bent at an unusual 45% angle.
This is from an email question – I do not have the wrench
SnapOn B1757 01-1.jpg (260.18 KiB) Viewed 1726 times
SnapOn B1757 03.jpg (282.56 KiB) Viewed 1726 times
SnapOn B1757 03.jpg (282.56 KiB) Viewed 1726 times
SnapOn B1757 04.jpg (269.87 KiB) Viewed 1726 times