Windshield LOF logo/date etching photo request

[Donald H.]

I'm trying to purchase new glass for my 1966 coupe restoration. I spoke to Pilkington Classic and the guy there said I needed either pictures or drawings of the LOF Logo and dating that I want on the glass.

I only have one piece of what I believe is original glass, a vent window which has a date of Feb 65, and will use a photo of that for the Vent, Door, and Rear Glass. All clear.

I do not have a good picture of a Clear Windshield LOGO.

I believe the attached picture is the correct LOGO (except for the dating) for Vent, Door, and Rear glass.

I believe the windshield should have:

- AS1 instead of AS2
- Should have LAMINATED instead of SOLD TEMPERED
- Should have M54 instead of M51

Is there anyone out there who would be kind enough to send me a clear photo of a 66 CLEAR windshield LOF Logo/Date etching. Email donh45@yahoo.com

Thanks,

[Edward J.]

Re: Windshield LOF logo/date etching photo request

Don if you have a I-phone send me a PM I will send you a pic of my original. Ed

[Stewart L.]

Re: Windshield LOF logo/date etching photo request

The AS1 rating is the ANSI designation for the amount of light transmission the tint allows. A clear windshield will not have an AS rating.

[Bob R.]

Re: Windshield LOF logo/date etching photo request

Stewart I think you may wrong on the AS1 designation. I believe AS1 is used for the windshield and has to do with the ability to see clearly out of the window with no distortion. Side and rear windows are AS2 where visibility is not as important. I am attaching a photo of a 63 clear glass windshield dated GC or April 63. Notice the picture was taken from outside the car and the writing is backwards. Donald show this picture to Pilkington and they will duplicate it.

[Michael J.]

Re: Windshield LOF logo/date etching photo request

Stewart I think you may wrong on the AS1 designation. I believe AS1 is used for the windshield and has to do with the ability to see clearly out of the window with no distortion. Side and rear windows are AS2 where visibility is not as important. I am attaching a photo of a 63 clear glass windshield dated GC or April 63. Notice the picture was taken from outside the car and the writing is backwards. Donald show this picture to Pilkington and they will duplicate it.

+1, my original clear '64 windshield also looks like this, with the ASI on the bottom with the LOF logo, as the '63-'64 TIM&JG page 55 states it should be on a clear windshield, as it has that ASI designation since the whole windshield meets that rating code. Thus on a clear there is no AS logo with an arrow at the laminated area up the passenger side of the windshield where the tint starts.

[Stewart L.]

Re: Windshield LOF logo/date etching photo request

There is clear glass that does not have the AS rating, possibly some do and some don't.

[Patrick B.]

Re: Windshield LOF logo/date etching photo request

AS 1 is the ANSI spec for laminated glass which includes tests for light transmittance, strength of inner liner, breakage properties, distortion and other attributes suitable for windshields and side windows. The minimum light transmittance is 70% which the tinted glass must pass (except in the shade band area) and obviously the clear windshields pass (approx 92% transmittance). AS 2 is the spec for tempered glass suitable for all locations in a vehicle except the windshield. The minimum light transmittance spec for AS 2 glazing is also 70%. Laminated glass is required for windshields so they are all marked AS 1.

[Donald H.]

Re: Windshield LOF logo/date etching photo request

In Colvin's Corvette by the Numbers he says the 'M' and number at the bottom of the LOF LOGO/Dating etching is the model number designation and that this number confirms LOF glass construction including composition and thickness.

What I think I have seen in the glass I have and pictures in the 66 TIM&JG is:

The clear windshield has an M3 model number designation
The tinted windshield has an M4 model number designation
The clear vent, door, and rear glass has an M51 model number designation
The tinted vent, door, and rear glass has an M54 model number designation

Can anyone confirm these 'M' number are correct for 1966 glass?

Thanks again,
Don

[Stewart L.]

Re: Windshield LOF logo/date etching photo request

Michael is correct, the AS1 does not appear on the upper Rt side of a clear windshield. It is on the lower portion.

[Timothy B.]

Re: Windshield LOF logo/date etching photo request

Can anyone speculate a date when the M3-M4 marking started on the windshield. I will double check but the tinted windshield I purchased from OEM glass a long time ago does not have this M4 marking.

Donald,

I own a September 66 built 1967 car and it has it's original tinted windshield with the M4 under the word LAMINATED. If you need a picture I can get one later today.

[Donald H.]

Re: Windshield LOF logo/date etching photo request

Can anyone speculate a date when the M3-M4 marking started on the windshield. I will double check but the tinted windshield I purchased from OEM glass a long time ago does not have this M4 marking.

Donald,

I own a September 66 built 1967 car and it has it's original tinted windshield with the M4 under the word LAMINATED. If you need a picture I can get one later today.

In Colvin's Corvette by the numbers he first mentions the M3-M4 numbers in his description of 1965 glass. He has artwork samples of C1 and C2 LOF glass logos and the first ones that have the 'M' numbers starts in 65.

[Timothy B.]

Re: Windshield LOF logo/date etching photo request

If that's the case, the windshield picture in post #4 has to be a reproduction glass or a later dated service piece. The original split windows and door glass on my 63 does not have and M markings at the bottom.

[Michael J.]

Re: Windshield LOF logo/date etching photo request

My original '64 glass does not have "M"s either.

[Edward J.]

Re: Windshield LOF logo/date etching photo request

If that's the case, the windshield picture in post #4 has to be a reproduction glass or a later dated service piece. The original split windows and door glass on my 63 does not have and M markings at the bottom.

Tim, I you have mail. Ed