To have a serial number on the crossguard and scabbard, can anyone give me their guess on the rarity and premium on having it?

Well this is a tricky question. Because nobody has agreed by any standard that I know of.
But since you are talking about SS daggers I assume, this is how I would rate it.
1. Rohm or other dedicated dagger to a listed officer. - 20% -50% above standard rate. Variables such as maker, condition and provenance.
2. Dedication to a notible figure. I really don't know. And would hate to guess. Maybe some of the guys here can give recent known prices sold for these type of items.
3. Then you have a scale of who numbered the most prolific. I would say Boker. But just a guess from the various Rohms I have seen over the years. Certainly Eickhorn made more SS daggers. I would place more value on a numbered
Boker than a Eickhorn. But that is me.
Wittmann says less than half were numbered.
But as to having both scabbard and crossguard
serial matched is rare. I have personally seen only two. And that was a long time ago.
If you have one or considering buying one, please post a few photos. That I believe will help to get more of a response from the other forum members.
I personally will always pay more for a serial
numbered piece than without. How much more? I
can't say. It depends on a lot of things that are too much to get into here. But I do have Bernie Brule's book "the Key" close by. Just in case that number is a listed officer. Then I'm
really interested. It is hard to find a listed officer. When you do, you should buy the dagger if it is a honest piece and not priced to the moon. On occassion, one would come up on ebay.
But those days are gone. -Wagner-

I think we are talking about SA or NSKK daggers here.

The answer is that on an SA or NSKK dagger, a serial number adds very little if any value because there are NO known lists linking serial numbers to enlisted men or officers.

There is not even universal agreement on whether the numbers we see on SA/NSKK crossguards are a Nazi Party number or a unique SA number or something else.

Sellers may try to convince you otherwise, citing "research potential", but that unlikely unless you stumble on that man's ID papers or spot a reference to him somewhere.

So, a well stamped number is a nice touch to have, but should not add much value at all.

Dave

In my opinion, the research paper written by Dr Martin Schuster of the Technical University of Berlin, specifically on this subject and at the request of myself, has in fact solved the issue of what these numbers mean. Read it for yourlself and decide, but Martin bases his analyusis exclusively on primary SA sources from the Bundearchiv. I have shared the paper with Wittmann and he does agree with this thesis.

http://daggers.infopop.cc/eve/forums/a/tpc/f/160093573/...580034304#8580034304

Gustavo...

That is some way to answer a question!

Absolutely Fantastic!!!

Thank you