Sigla logo differences 65-73

[Schiefer]

My two SWB´s have different Sigla logos and numbers/letters on the windscreen. One looks to be original, the other I´m not so sure about.

Is it possible to interpret the numbers/letters on these screens to determine what year they are from?

The "Made in West Germany" obviously disappeared for a while looking at the pic of the 700 mile S, but when? The last picture was recently posted in the RS-thread and is supposed to be the original glass from a 73 RST. This screen is marked Made in Germany.

Some pictures to show differences:

My late ´66 production 67S:





My restored april ´67 production 67S. Is this a replacement screen?? Please comment/confirm.



The mint Risinger 67S:



Olive 68 restored by CPR:



The 700 mile S, photo credit Cornpanzer:



73 RST posted by forum member bigspann:



Also for comparison what seems to be available at the moment from Stoddard and Sierra Madre:

Stoddard:



Sierra Madre Collection:





Comments and pictures of original windscreens would be appreciated.

Thanks, Radmund

[Schiefer]

Good info from Mark. Hopefully he will chime in and elaborate:

ALL early cars got sigla, later on they went to Sekurit but not on long hoods, there are a few different wording of the acid etched inscription - it would be a shame to spend lots of time and effort purchasing used glass to later realize you have a replacement Sigla. Hint - transportation safety boards require certain notation on all windows made after a certain time, the windows without these notations would be from an earlier time.

[VintageExcellen]

The E1 and E2 marking are Euro safety standard similar to DOT I believe. Someone from Europe will have to say when they mandated this safety certification. I have had 70-73 car without the E1 marking and I have never seen a short wheel base original windshield with a E1 marking. The 700 miles S probably can't be argued with and that is the first time I have seen the E1 on that year (I think). The heart shape is absolutely a late production. That little squiggly mark is not on a bunch of them either. I am not a glass expert as I can't get into knowing what the date numbers mean or I will go nuts with assigning glass windows to my resto cars.

[beh911]

Interesting that each example is unique so far in this thread.

Here is the original Sigla in my 69:

[hesaputz]

I think that the DOT glass (and other) standards went into effect January 1, 1968. I'd be fairly confident that windshields before this period don't have the DOT marking. I know that Porsche went to one glass for all cars (ROW and US) at some point later, but I don't remember when.

[Jon B]

The Porsche trademark, an inverted triangle with stylized letter P, began to appear on their parts in 1968.
http://www.trademarkia.com/p-72313923.html

Jon B.
Vista, CA

[Schiefer]

Good stuff, thanks guys!

[mcampuzano]

The Porsche trademark, an inverted triangle with stylized letter P, began to appear on their parts in 1968.
http://www.trademarkia.com/p-72313923.html

Jon B.
Vista, CA

Earlier than '68, this is an oil filter canister from a '64 356

[Jon B]

Earlier than '68, this is an oil filter canister from a '64 356

You may have found that cover on a '64 356, but it is not original to the car.
The same cover for oil filter canisters was used on 912 engines through 1969.

Jon B.

[Jon B]

DOT25 indicates the windshield was produced by DETAG (Deutsche Tafelglas AG) through 1969, then FLACHGLAS Wernberg GmbH since 1970, manufacturers of the SIGLA brand.

The history of SIGLA glass...
http://www.flachglas.de/unternehmen/geschichte/
http://www.flachglas.de/en/company/history/ (English translation)

Jon B.
Vista, CA