Logo "G" on vintage lantern glass

hi folks!
no classic GE puzzle as usual from me, only some detective work, willi1 and raven63 might find interesting. (and probably CuriousJM ...? /check reply by Raven below)

since childhood I have many "collections" of various sorts of things, for example petroleum lamps, 2 or 3 of which are might be valuable.

one of these is a vintage (WWII?), German Feuerhand Nr.405 sturmlantern, but what is that glass with the "G" logo?



I have read some of its history, checked many image search results, but no "G" glass.
(only the "BAT" logo glasses)

it is clear, the original Feuerhand-logo glass has been broken and replaced with this one which is patent-size too, so as I think also German made, but I would like to know, how far this replacement degraded its value?

ending, it would be the best to put a placemark where the glass was made!(;

would you help me out with this?

thanks!

g


***

upclose of the logo for image search purposes:

Unfortunately, I did not find anything.

Maybe the two forums will help you. Or the company Feuerhand directly ...

PELAM

Forum Petroleum

2 hours of image (also reverse) search with dozens of seach term combinations, and now I know vintage lantern glasses with Dietz, FROWO, Feuerhand, BAT, etc.-logos, but none with the "G"...):

probably not even German made...?


...

thanks for the links and your efforts trying to find something willi1!

Well, I did now a lot of search, too.

I learned that the FH 405 glass is identical to the FH 252. The interesting thing is that the 252 was produced also under license in India in the 1950th. maybe it's a glass from there

Very interesting puzzle and I willl try to find out more...

Cheers

Raven

Meanwhile I'd like to have some theories about this glass:

• it is a special for some major customer like a big city or a special event or so
  
• it is a replica build somewhere (but for this it's a good one with the item on the glass)
  
• it is build in the GDR and therefore not well listed...

I searched a lot in German, but also as native speaker it's very complicated...

I thought that "Dr. Google" is my friend, but this one is not "googleble" lol.

There are a lot of forums for this special question, like this one

and a Wiki here

Edit: maybe GENIOL, a German manufacturer for PETROMAX lanterns

Cheers,

Axel

...or it's Graetz, an old manufacturer and long time holder of PETROMAX

thank you Axel (raven63 ) all your efforts on listing great related clues!

Dec 12, 2018 18:19:43 GMT raven63 said:

...I searched a lot in German, but also as native speaker it's very complicated...

well I do the same in english and hungarian with no success so far...
that was why I have addressed this one to you and willi1 -that I thought it will be easy for a native-, but it turned out to be not.

anyhow, it is too late now. - I cannot stop, need to keep on searching just until I (or anyone else) find(s) the answer!

and if someone asks; why? -well, just because I am syzy"G"! (: