Luftwaffe factory marking identification help

[13starsinax]

Hello,
I would appreciate some help with identifying this makers mark. It is a S in a oval with a key through it. I had this information, but misplaced it. Could anyone please direct me to a good resource for identifying these types of markings for in the future?
This is not my photo, but I have access hatches with this marking. Using it for best reference I could find.
Thank you


02/29/2020 Edit: Clarification. The ink stamp is B&V for Blohm and Voss. My inquiry is for the metal stamped roll mark.
What/ is the keyword for searching for these identifiers? I can find a wealth of knowledge for pottery, bayonets, but not for this type of manufactures.

[edNorth]

Is there aircraft involvement here?

B&V also built ships and submarines.

[13starsinax]

Yes, aircraft parts. I have several with this marking. I am trying to find help with the other marking that is punched into the metal, not the ink stamp. Thank you for helping.

[jschreiber]

Hello


The symbol comes probably from the aluminium alloy (duralumin) manufacturer. But I could not identify it, founding at this hour nothing relevant for the main producers (Dürener Metallwerke, VLW, VDM, Singen...). Do you have more information on the parts where you found those stamps (Aircraft or component identification) ? Some aluminium producers are more linked to specific aircraft builders as others, but one has to be careful, because from 1943 with the expanding decentralisation and huge subcontracting, things are becoming a lot more complicated.


Best regards


J Schreiber

[jschreiber]

Hello


At second thoughts, the aluminium manufacturers trail was probably not the right one... Since the label was a key, and associated with Blohm & Voss, another possibility is the Weser Flugzeugbau company, located at Bremen. The key is present in the Weser Flugzeugbau company label (and in the coat of arms of Brement), and the Weser Flugzeugbau company produced BV 138 flying boats.



Do you have more informations on the other samples you have on mind ?


Best regards


J Schreiber

[13starsinax]

Bump, Thank you for your replies. I really appreciate your thoughts. I did the same as you and tried to come at it from the dura-aluminum contractor. I agree that the one makers mark is close. I have seen it on several air craft types though.

Please take the B&V out of the researching. The photo in the OP was for a better representation of the marking, it is not mine.
I will now include some pictures of a hatch I have that is supposed to be off a Ju-88. I have tried my best to get a picture of the mark in question, but it is in a difficult spot. The first photo is as close as I could get to it, and the additional photos are so you can see the entire hatch.
I have several different hatches with this same marking.

[13starsinax]

I went digging into my Bf-109 parts box, and this one is clearly marked
C SIEVERS

HEILIGENHAUS
I will include additional photos of it. What do we know about this company?
I did not know this hatch was marked this way, or I would have posted it first. Collecting these parts is a very interesting hobby.
I greatly appreciate all of you looking, and continued support with shared knowledge.

[S Sheflin]

Post #7 - HEILIGENHAUS:
Kiekert Söhne, Schloßfabrik, Heiligenhaus, bei Velbert [NW], (Hersteller = eku) Aircraft components
Kiekert Söhne (für ausländische Zulieferer) Heiligenhaus, bei Velbert [NW], (Hersteller = lzl) Aircraft components
Source VISIER publication.
Respectfully,
Steve Sheflin

[jschreiber]

Hello


Carl Sievers (Heiligenhaus, near Düsseldorf) can finally be the answer.


Some papers from the company can be found here :
https://www.zeiss-ikon-schlossmuseum...us/CHS%2C4.jpg


The code for Carl Sievers (Fertigungszeichen) was ojh. Produced spring loaded access hatches, probably for a lot German planes.


Best regards


J Schreiber

[ghostwriter]

found in www:

Carl Sievers, factory for locks and fittings, apparatus, equipment and metal construction, foundry, Heiligenhaus, Düsseldorf district, established in 1904

regards
ghostwriter