7,92 case with transparent varnish


#1

This case was found in the ground. Headstamp - DM-S-14-9. Judge by it’s condition it was found packed in cardboard box. The bullet was S, but it was withdraw from the case because of rust damage. The man who sold me this case also show me another 20-12 same cases with the same headstamp- all with transparent varnish around the primer. I selected one sample, which shown on the picture? Did somebody have the same WWI cases with transparent varnish? What does it mean?


#2

Treshkin (privet)
To me it looks like the original surface preserved by the original paint having been there and which got removed during the cleaning process. The not covered part of the case and primer just corroded over the time.
Try a close look with a microscope.

Any other thoughts?


#3

[quote=“EOD”]Treshkin (privet)
To me it looks like the original surface preserved by the original paint having been there and which got removed during the cleaning process. The not covered part of the case and primer just corroded over the time.
Try a close look with a microscope.

Any other thoughts?[/quote]

Privet, EOD! In Ukrainian we even can say (in that case - write) - Pruvit.

Yes, it looks like removed varnish. But only one person who clean this case was I am. I clean only some spots of white patina from the base of the case (I clean it with small knife) - to see the headstamp. And I didn’t touch the primer and its border. I ask about this strange case, because I already met the same samples some times ago, also with marking DM-S-14-9. And this samples also was without black varnish. At that time I thought that varnish was missed during cleaning, etc. And now I met the same sample from another source and also with strange transparent line around the primer. I am absolutely sure that nobody clean this cases, beside me.
Another interesting moment in this headstamp - is very deap marking DM, usually it very thin.

Some day soon I will try to get another cases from with this marking and place a picture in this topic.


#4

Treshkin, dou yo have access to a microscope? It would be great if the translucent laquer could be confirmed this way.

The 7.9-specialists certainly will know more or come up with a definitive answer.


#5

I suspect that the age and time in the ground have affected the pigment in the lacquer. I have seen a few examples over the years of this happening. I once had what I thought was a 7,9x57mm PmK cartridge. Since it was a very low lot number, I sent it to Bill Woodin for his collection. He though it was a PmK too, but X-ray showed it to be an SmE. Somehow, over time, due to storage, age or environmental conditions, the blue annulus turned black.

AKMS


#6

Probably it was a chemical reaction that the black colour became .
The only cases with transparent varnish I know of are WW2 SmE Lang cartridges.

Rgds,
Dutch


#7

Here is the same headstamp with the black paint intact plus a couple others with the black gone or mostly gone which leaves a bright ring similar to yours.


#8

I concur with Phil, EOD and Dutch. This should have a black primer seal. I have several cartridges, all in poor condition, with the similar look of the one published on this thread. It looks like transparent lacquer. I also believe it is either that the pigment has been affected by the conditions that put the round in poor condition, or that it is completely gone. I am not scientific enough to be sure which, or know the “why” of it, but I have had enough 7.9s go thru my hands to feel that this originally had a black primer seal.

One other possibility, and I don’t know enough about lacquers, varnishes and paints to know if it really is a possiblity, is that the substance normally used for the black primer seal was not well mixed when applied to some of these cartridges, and the pigment was largely lacking. I am probably reaching to the sky here, but I don’t want to be too dogmatic in my statement that this round must have had a black seal, even though that is what I really believe. I have been fooled before. By regulation, though, there is lttle question that the round was supposed to have a black seal.


#9

Hello,

i think this case as been re-primered… look at the crimp.
so perhaps a green annulus primer has been use and this color is what it stay of the the green annulus…

Regards
Fab.


#10

[quote=“fab”]Hello,

i think this case as been re-primered… look at the crimp.
so perhaps a green annulus primer has been use and this color is what it stay of the the green annulus…

Regards
Fab.[/quote]

Yes, crimps looks as reprimed.

I also check another cases from this bundle. They has different headstamps. Some cases has remains of black varnish around the primer. I also try to scratch this strange transparent line around the primers and I am sure that there only metal (i.e. brass) and no varnish, even transparent.



#11

To me it looks like the original laquer came off due to some reasons. Maybe poor quality?


#12

Yes, you are right. I shown picture where some samples had complete black varnish, some had only remains of varnish and some - losted varnish.