All About Pocket Knives

Howdo,
I got this for my birthday last week from a friend. All that's been done since I got it was a little 3n1, a little light wipe and a lot of wondering.
From what I can figure, it's an R173 (all stamps are either very faint or non existent) from 33-40.

It's my first Remington and I'm honestly surprised.
I haven't sharpened it, don't need to
Both blades are razors. It's a cool, old, heavy, something my granddad carried. I think I might have to branch my collection out a bit now.

My buddy also got a few more knives at the yard sale (gotta start going to em), a Kutmaster and an old Case.
I'll post those on the respective pages.

If anybody has any info about it, I'd appreciate the knowledge (like I said, I'm just guessing).
Thanks for your help and have a great August!!!

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This knife is in better shape than me and I'm 30+ years younger.

Nice old knife. It looks like a R163 to me? Does it say R173?

Well sir, you were right. Like I said, I was guessing and you made me realize... I have allot of ways to measure and make sure.
It's a R163. The stamps are barely there, I had to take a million pictures to make any of them out.
Thanks for your help