Ok - I thought I did- I have this exact Knife- almost times two!
Knife # 1, Stamped:made in USA, the only difference this Knife of mine does not have the Thumb Stud on the Can opener - same Crinked Can opener - Stamped exactly the same - the Bone on my example is not quite as deep or as desirable as the OP's. Same Bail constuction
Knife # 2, Same Crinked Can opener, same Bail construction, only the Punch on this knife is slightly thinner- not by wear - but by manufacture, This Scout is a Keen Kutter- with the Long Screw Driver etc- smaller difference between the two Knives of mine - this Keen Cutter also has a crink in the Punch as well as the Can opener - where as the OP'S knife is like my Knife number 1 - where the Punch is not Crinked. This Knife also has Brass Liners compared to Steel on #1. The Bone on this Keen Kutter is a Dead Ringer for the OP's. Brass pins as well compared to steel as #1 and OP's.
Goins :
MADE IN USA c1924 - 1941- a mark used by Sears& Roebuck- STA SHARP SPORTSMAN is etched on Main.The Knife seen with this marking was made by Camillus.
MADE IN USA c1941 - 1960 - Marking used by Sears & Roebuck. CRAFTSMAN FORGED STEEL is etched on Blade, Knives found with "MADE IN USA" marking on the Tang - contract Knives made for Sears & Roebuck Company of Chicago, Illinois.
An ink stamp on the Blade denotes the sears bran name they were using during a specific time period.
Camullis, Schrade and Ulster all have made knives fro Sears using this Tang Stamp.
End of quote - Goins.
I looked up some Pattent patterns of the Punches - because if I found the Punch- we have the manufacturer - I have one close- but not quite as this Punch in the OP's post does not have a laminated Tang as the one I found.
So collating all that together - I think that Ulster made the OP's Knife as well as my knife number#1 mentioned in this post.
Out of interest post 353 Charlie posts an Ulster- with striking similarities- Punch is slimmer- and longer, Main slightly wider- but was the OP'S when in pristine condition?
http://www.bladeforums.com/threads/lets-see-your-scout-camp-knives.1463060/page-18