914 Windshield inside OEM Glass Sticker logo?, Anyone making these OEM Windshield Mfg. Stickers Options

[TJB/914]

Looking for help if anyone makes these OEM Windshield Sticker's?
Are they different for every model year?
Many years ago while restoring my 914 I used a solvent to clean up the windshield glass & destroyed the letters. I would like one for my OEM original windshield (IMG:style_emoticons/default/pray.gif)
This is off as recent 1976 in a local shop for repairs in this photo.
Tom Michigan

[wonkipop]

here is how you tell who made the windscreen.
its the DOT number.
Dept. of Transport assigned manufacturer's DOT numbers back in the late 60s and kept a list.

https://www.carwindshields.info/dot_db


DOT 31 has disappeared off the list.
presumably because kinonglas was aquired by st. gobain sometime in the 70s after those 914 windscreens were manufactured.

interestingly a lot of sigla windscreens have the DOT 25 number.
this is assigned to flachglas gmbh.
flachglas is the name of the german company who made sigla.
it would appear it might still exist as a DOT number. its on the list.

https://www.flachglas.de/en/company/history/

no relation to kinonglas, sekurit or st. gobain.

st. gobain (sekurit) retain the usa DOT 27 number but its for the german factory.
the italian factory is DOT 37. the french factory is DOT 39 - i think DOT numbers go even further, they identify not just companies but either particular factories or particular divisions in countries.
presumably DOT 31 was retired and DOT 27 took over once st. gobain acquired kinonglas.

thats how you work out the manufacturer.
DOT number is a usa requirement but a lot of screens have it whether sold in cars in USA or not, even today. my renault clio has a DOT number on it. not a car that was even sold in the USA. its a 2002 model with a DOT 39, means its french french and french.

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but i can find out zero on the wiggly line and the plain D number that is usually near it.
narthing. but both sigla windscreens and kinonglas had it and the companies are entirely separate. were back then and still are today. (IMG:style_emoticons/default/confused24.gif)
i think that symbol was particular to germany and meant something.
might have stood for laminated? interlayer. who knows. but there is no trace of info on it anywhere that i can find doing all sorts of searches. my usual go to places are mercedes forums and speciality sites. they often have this obscure stuff. no luck.

i did come across a mercedes benz from the 70s on an image search with an almost identical marking layout to the kinonglas 914 screens except it was made by sudglas.
This was DOT 30 and has also disappeared off the DOT list today. presumably sudglas was acquired by another company and absorbed. also had the wiggle line.



the weird logo in the sudglas screen is not a company logo.
its the british standards marking.
a lot of euro market cars carried it.
a lot of aussie cars had it too back in those days.
likely never on USA car windscreens.

conclusion.
a porsche could have either a sigla or a "st. gobain/st. gobain absorbed company" screen in it from factory. there won't necessarily be a logo. original factory installed screens more than likely just had the car brand on it. though maybe porsche did not do that.
mercedes and VW did. later replacement screens might have had the glass company logo and not the car brand logo. but the screens could be either.
the vast majority of VW screens would appear to have been "st. gobain".
914s were built by VW essentially. probably copped the st. gobain most of the time.
but a replacement screen could certainly have been a sigla. they would have been in the OEM supplier loop and could easily have made them too.