So here are three wrenches I picked up today.
(https://lh6.googleusercontent.com/-orSbsuUlM70/Tl_nGZk9WvI/AAAAAAAAAHQ/SHd4vcaJo6E/s800/IMG_1598.JPG)
Dan
The G3170 is interesting. Is the mark on the left end a (Whitman & Barnes) logo ? Any marks on other side ? Not sure which type yours is;there are 70 some different types of G3170.