I had to take the bad to get the good. This is my first venture into the world of the M3. I was curious as to a value the later model due to condition. Any input would be appreciated. 

I dont know what you consider the good . The guard marked knife and sheath are heavily worn as you can see but original . The blade marked knife looks like a nice original from the provided picture , the M6 sheath Is an aged reproduction .

I’ve had several different opinions of the m6. What makes you think it is a repo? 
I would like to collect all the info on them I can. 

I think I might see it. Is it the M and the 4?

Kti425- My opinion on the guard marked CASE, is it has good honest wear, obviously been sharpened. It is paired with a a correct M8 scabbard, again with honest wear. I would guess it to be a WW2 vet used knife. Now the Milsco M6 sheath, agree it is a fake, real simple. Milsco used  8 diamond shaped staples, instead of rivets  to hold the sides together.   SKIP

I appreciate the information. 

To answer the question on value, the "lesser" of the two, assuming they are priced together, $150-200 depending upon the circumstances (on-line, gun show, military show).  The M8 scabbard, although the paint is worn, is in good shape, no corrosion that I can see, the scabbard does not appear to be cracked, no rust on the throat.  Look underneath the top plate and see what the heat lot number is (should be a B-N, with numbers above and below the -).  That will give you an idea when the scabbard was made, the lower the bottom number the earlier).  Sometimes worn blades bring more than expected when paired with a good scabbard/sheath.

As for the "better" of the two, the reproduction sheath, aged as it is, would be worth at best $30-40 by itself.  The M3 blade marked Case might be in the neighborhood of $200-250 by itself.

Thank you for the input. Are the prices for things on eBay just grossly overpriced? I was hopeful for the earlier knife to be in the $400 range. 

Even with the repo sheath and I’m thankfully still on the positive side of things. 

How about my M3/M6. Is it a good one. Blued blade. 

Steve Brannan, your Kinfolks blade-marked M3 and Barwood M6 certainly look good to me. That's a very nice set!

Thanks Tim. 

Guys, sorry for my off-topic question, because I'm not an M3 owner, and i didn't find this info until now: how sharp was the cutting edge of the M3 fighting utility knife out from the factory line?

The mint M3s that I have, are wearing a basic factory ground edge. I have yet to see a mint one shaving the hair off my arm. I have witnessed a lot of M3 blades ruined due to poor sharpening methods. Personally, I do not try to sharpen any of mine to avoid ruining the collector value.  Others may have different experiences with sharper edges, it may come down to the cutler who ground the edges.  SKIP

To answer the OP's question in Post #8, yes, the PRICES on Ebay are sometimes grossly inflated.  To get a better idea of the selling prices, search SOLD M3 knives, and look at the listing to see what exactly sold for that price.  Best to look at auctions and not Buy It Now (BIN) because BIN will sometimes go for best offer and the actual sold price doesn't show up.  Also, if looking to sell the earlier knife, offer it here for what you think it should bring, and if it sells for that price, good for you.

I’ve noticed that the asking prices at some of the gun shows I’ve attended have seemed to run the gamut. But as you said, asking price vs selling price is always different. 
 

I am new to the forums so I have to get in a number of posts before I can list anything for sale. Not sure if I’ll ever get to 30. 😂

5 hours ago, SKIPH said:

The mint M3s that I have, are wearing a basic factory ground edge. I have yet to see a mint one shaving the hair off my arm. I have witnessed a lot of M3 blades ruined due to poor sharpening methods. Personally, I do not try to sharpen any of mine to avoid ruining the collector value.  Others may have different experiences with sharper edges, it may come down to the cutler who ground the edges.  SKIP

I recently aquired this M3 Camillus. Seller did not mention how sharp it is. I can shave the hair off my jaw with it! The blade came extremely sharp and professionally done. There are scrape marks on the blade coating from putting it and out of the M8 sheath. I wonder if it might be a returned M3 to the arsenal to be cleaned up, rejuvinated and  re-issued ?