Added this to my Craftsman and Pony Jack Family today. A Craftsman 9518. A 2-7/8 inch closed Pony Jack.It does not have a tang stamp, but has the Craftsman Blade Etch with the Long Tailed "C" that underlines the word Craftsman, with the model number to the right. This one still has part of the Blade etch, and the blades have great snap and positive half stops. The blades do have scratches and spots, but do retain some of their original luster. It has the brown imitation stag plastic handles as Sears listed them, and has a easy open cutout.
From what I've researched, The First 9518 in this configuration appeared in the Sears Catalogs around 1948. The early years just listed them as a Pen Knife or Vest Pocket Knife. It wasn't until 1957 That Sears listed it as a Pony Jack Knife. Also the early catalogs listed it as having Chrome Vanadium Steel Blades, then in 1954 Sears started listing them as having High Carbon Steel Blades. The 9518 Pen Knife or Pony Jack was listed from 1948 until 1958. In 1959 it was replaced with the 9507 Pony Jack, which was basically the same knife but probably by a different manufacturer.
Here are some pictures of mine.
Sometimes I Sit and Think
.... Other times I just Sit
I May Grow Older, But I refuse to Grow Up!!
I'll sharpen it for you, but I don't give out band-aids!!
Smitty