Some questions about the lamps manufactured by VEB Leipziger Werke

Hello everyone,
I always enjoy your informative posts. Thank you so much.

Now, I’d like to ask some questions about the lamps manufactured by VEB Leipziger Werke during the East German era after World War II.
Please see attached images.

1) I haven't seen any material which can confirm the model number of the 1st generation lamp. The model in the attached image uses a lot of brass and seems to be the predecessor of #61 LN. What is the model number of it?

2) When was the 1st generation changed to #61 LN?

3) I suppose the 1st generation lamps are often fitted with a glass marked “Jenarer Suprax Glass / Schott & Gen. / Jena”.
Were those the ones which VEB Leipziger Werke had in stock?
Or those were manufactured by an East German glass maker at Jena's factory after World War II and before introducing the PASO THERM brand?

Sincerely,
Shinzo

 

I misspelled it, PASO → RASO is valid.
Shinzo

 

In the case of lanterns manufactured in East Germany, it is difficult to find out valid information. The type designation 61Ln comes from drawings and other documents that Jörg Wekenmann found in various archives. The designation does not appear in any catalogs, instructions or advertising brochures.
Since there was often a shortage of parts in the East German economy, these lanterns were made in different variations, and often production lots were customized.
Despite the different make, I would say that both lanterns are the same type. It could well be that one lantern was made earlier than the other, which could explain the different parts. Unfortunately, neither can be dated precisely.
The glasses, in my estimation, were both made in Jena / East Germany. However, the Schott SUPRAX brand was/is owned by a West German company with whom there were trademark disputes. I would therefore assume that the RASOTHERM glass is more recent than the SUPRAX glass.

 

Glass is not fixed to a lantern or model. It can be changed in the life time of the lantern.
It is not a "valid" argument to date a lantern.

 

@gkpllantern
I think you are right on all points in your statement.
The wise man in Germany's lamp scene, Mr.Wekenmann, once told me that VEB Leipziger Werke had produced these pressurelamps in two different versions.
One made of iron with a green painted tank (VEB 351LN and VEB 361LN) for the GDR and made of brass, nickel-plated 51LN and 61LN for foreign countries,marked HASAG.The 61LN was high-gloss nickel-plated .
I once found two 361LN VEB Leipziger in the original packaging with completely rotten operating instructions from 1952.They had brass inner castings and the handwheels were made of red fiberglass. There were 2 versions of these red fiberglass handwheels .The langer had 3 holes.There was also a version on the older 351LN that used the rear part of the old two-piece Petromax handwheels.These old pre-war parts can only be found at the green VEB Leipziger.I've never seen anything like this on a VEB Leipziger 51 or 61 intended for Export.The change from VEB 351 to 361 and 51 to 61 must have been in 1952.
In1962,when the production was moved from Leipzig to Beierfeld,the VEB 361LN was further built and was called BAT from then on and was also marked four times on the carrying frame. There was also a nickel -plated export version of this lamp.It had no BAT marking on the carrying frame but still had the HASAG on the tank.
At the same time, the new BAT270 was manufactured in Beierfeld.
I don't know how long the types were made in Beierfeld.I saw an owner's manual for a BAT 270 from 1966.Then the trail of my investigation is lost.
I've never seen a nickel-plated version of a BAT270.It probably doesn't exist.
There is no MEWA brand.
All MEWA's are VEB Leipziger.

Reinhard

 

Those lanterns look well built and the information in the previous posts is good to have.

 

Thank you all for your detailed comment.
Shinzo